Lee Jae-myung

Lee Jae-myung (Korean: 이재명; born 8 December 1963) is a South Korean lawyer and politician serving as the member of the National Assembly for Gyeyang B and as the leader of the Democratic Party of Korea since 2022. He previously served as the governor of Gyeonggi Province from 2018 to 2021 and was the nominee of the Democratic Party in the 2022 South Korean presidential election.
Born to a poor family in Andong, Lee became a factory worker after primary school and became disabled due to workplace injuries. Lee earned middle and high school equivalency diplomas and studied at Chung-Ang University, earning his law degree in 1986. As a human rights and labour lawyer, Lee organized with Minbyun and advocated for opening a new hospital in Seongnam.
Lee entered politics in 2005 and unsuccessfully contested a few elections. He was elected Mayor of Seongnam in 2010 and re-elected in 2014. He resigned in 2018 for a successful run for Governor of Gyeonggi Province. Lee ran for president in 2022, winning the party nomination, but narrowly losing to Yoon Suk Yeol in the general election.
In January 2024, Lee survived an assassination attempt. Later in November, he was convicted of violating the Public Official Election Act by falsely denying his connection with Kim Moon-ki, a former executive of Seongnam Development Corporation, during his 2022 presidential campaign. However, the decision was overturned upon appeal, allowing him to run for public office again.
Lee was born on 8 December 1963 in Andong, the fifth of seven children. The date of birth is given as 22 December 1964, but this is a date arbitrarily written by the father because he was late in registering the birth, and the actual date of birth is estimated to be between October 22 and October 23 in the lunar calendar.
Lee grew up in poverty, and as a result of his family's lack of funds, he would frequently forgo social activities and relied on the generosity of school faculty to attend field trips. He has cited fishing along the creek with his friends as being one of his favorite pastimes.
According to his first-grade report card, he was quite stubborn, he had normal grades, and he played well with his classmates. When Lee graduated from elementary school, the South Korean public school system did not give free education for middle and high school. His father spent most of the family's money on gambling, and Lee's family left Andong to find work.
Lee's family moved to Seongnam, an industrial planned city built during the administration of Park Chung Hee to concentrate industry outside of Seoul. Seongnam was mostly populated by poor people, who were often coerced to move there by the government.
Like other children from poor families, Lee worked in a handmade necklace factory instead of attending middle school. After the necklace factory went bankrupt, he moved to a company called Dongma Rubber. Lee at this time was not old enough to legally work in South Korea, so he worked under various pseudonyms. Lee injured his finger at Dongma Rubber.
After the accident, Lee left Dongma Rubber and worked for Daeyang Industry. In a second workplace injury, an industrial press crushed his wrist joint. The injury was untreated and caused a disability in his arm. Later, he was exempted from military service. He is a contemporary registered disabled person.
While working at Daeyang Industry, Lee saw a group of students wearing school uniforms and he developed a desire to attend university. He enrolled in classes to pass the exams. He passed the high school entrance examination and earned a middle school diploma in 1978. Two years later in 1980, he passed the university entrance examination and obtained a high school diploma.
Lee's personal experience with crushing poverty inspired his political philosophy of 'Eokgang Buyak', which aims to curb the privileges and excesses of the powerful and support the poorest segments of society.
Based on his entrance examination scores, Lee was accepted into Chung-Ang University's College of Law on a scholarship. In 1986, upon graduating from college, he passed the bar exam and entered the Judicial Research and Training Institute for two years in order to join the bar. Lee opposed the authoritarian regime of Chun Doo-hwan. Lee originally intended to become a judge or prosecutor for the prestige and pay, but he was inspired by a lecture from Roh Moo-hyun to become a human rights and labour lawyer, like Roh and Moon Jae-in. He set up his practice in Seongnam.
After opening his own lawyer's office, Lee organized for labour and human rights with the lawyers' organization Minbyun, working with the heads of labour counselling centres in Incheon and Gwangju. In 1995, he started a civic movement as a founding member of the 'Seongnam Citizens' Association'. He gained fame as a lawyer and social activism around the 'Park View preferential sale case', where an investigation suggested corruption in the awarding of building permits and preferential sales of property in Bundang to government officials.
Around 2002 two general hospitals in Seongnam closed. Lee started a movement to build a new municipal hospital. The city council, which was then controlled by the Grand National Party, rejected the residents' initiative ordinance in just 47 seconds. Lee's group protested the council, and Lee was wanted for obstructing official duties of a public official. Afterwards, he realized that he could not change society through social movements, and he decided to enter politics.
On 23 August 2005, Lee joined the then-ruling Uri Party, a predecessor of the Democratic Party of Korea, and declared his candidacy for mayor of Seongnam. He ran as a candidate in the local elections in 2006, but was defeated by 23.75% of the vote due to poor public opinion about the Uri Party and Roh administration at the time.
In the 2007 presidential election, Lee Jae-Myung served as the senior deputy chief of the Office of the Presidential Candidate Chung Dong-young of the Grand Unified Democratic New Party. In the 2008 general election, he applied for a nomination in the constituency of Seongnam Jungwon A, but was defeated by Cho Sung-jun in the primary election, and was nominated in the Seongnam Bundang A constituency. However, Lee suffered from another defeat with 33% of the votes under difficult circumstances, as the constituency was a traditional stronghold of an opposing party who had just won the Presidential election under Lee Myung-bak.
After the 2008 election, Lee served as the Democratic Party's deputy spokesperson at the request of the Democratic Party's leader Chung Sye-kyun.
He ran for the mayoralty of Seongnam in the 2010 South Korean local elections under the Democratic Party, and won with 51.16% of the vote against Hwang Jun-gi.
In his inaugural speech as the 19th mayor of Seongnam, he stated "It will not be easy to take a new step in Seongnam. If it's hard, let's take a break. Let's take care of each other's shoulders and smile, step by step. We can do it. Let's emphasize Seongnam, where citizens are the leaders, citizens are happy, and our Seongnam, where opportunities are equal." he started by moving the mayor's office to a narrower space after allowing the former mayor's office, which caused controversy over its luxury, to become a book cafe.
He also declared a moratorium on spending and debt repayment in his first press conference, due to the city being in large debt (though the debt has never been actively collected on). The first of this was the 520 billion won owed to the Ministry of Land, Infrastructure and Transport over the construction of the Pangyo project; he thereafter attempted to renegotiate the debt owed, and paid it off with a large amount municipal bonds. He also attracted attention due to his active use of social media, such as Twitter and Facebook, often expressing his views on national issues bluntly on the two services. A particular stunt involving him installing CCTV in the mayoral office gained fame, with him claiming that "many people were bringing in money envelopes."
He also restructured and focused on the welfare policy of the city. In particular focus was funding of the Seongnam Medical Center, which he began to strengthen. He also promoted free school uniforms for students. Along with that, he established a "youth dividend" system, acting as a form of Universal Basic Income for young citizens.
He won re-election in the 2014 South Korean local elections, winning 55.1% of the vote.
Lee is noted for his decision to ban dog meat and to shut down dog slaughtering facilities in Moran Market. The dog slaughtering facilities had long been a subject of heated debate over their morality, the rights of animals, and their environmental impact. In 2016, Lee, an animal rights advocate, signed an agreement with shop owners that prohibited the display and slaughter of live dogs at the market. The city helped business owners transition to other businesses, but did not offer any direct compensation for their closure.
He heavily criticized the response of Park Geun-hye to the Sinking of MV Sewol. He also held an 11 day fast in response to plans by Park to reorganize local government's fiscal responsibilities, which would've severely hurt Buddhist groups across the country, including those in Seongnam. By the time he had finished his term as mayor of the city, a survey showcased he had implemented 270 of 287 total promises, including the construction and expansion of the Seongnam Medical Center, a youth dividend policy, and the free student uniform program. In total, he had a 94.1% promise fulfillment rate.
Several of the policies introduced by Lee, such as the youth dividend, would go on to become his premier framework in national politics.
Following his defeat for the presidential nomination, Lee ran for Governor of Gyeonggi Province, which encompasses much of the Seoul Capital Area and has a population of over 13 million, in the 2018 local elections. He won the Democratic Party primary for the governorship over close Moon Jae-in ally Jeon Hae-cheol, capturing about 60% of the vote and being selected to run against incumbent governor Nam Kyung-pil. Despite general expectation of a close race, Lee would win against Nam by over 20%, managing to bring in about 56% of the vote. He was the first liberal Governor of Gyeonggi since Lim Chang-yeol [ko] twenty years earlier.
Lee received acclaim for his response to the COVID-19 pandemic as governor.
In March 2020, when the nation's first COVID-19 wave took place, following an infection cluster among followers of the Shincheonji Church of Jesus, Lee visited the residence of the organization's founder in Gyeonggi Province. The founder had refused to be tested for COVID-19 or to share church event attendance records for contact tracing. Lee warned the founder of the potential legal and administrative actions, and secured the founder's cooperation.
Lee also announced a special order for all foreigners working in Gyeonggi Province to be tested for COVID-19. Seoul announced similar policies but changed them to recommendation after facing criticism. Lee's special order resulted in finding 329 new positive cases.
In February 2021, a year after the first Central Disaster and Safety Countermeasures Headquarters (CDSCH) meeting was held to tackle the COVID-19 pandemic, it was revealed that Lee attended only three meetings, while the average number of meetings attended by provincial and municipal leaders was 68.5. In response, Lee said in April 2021 that he used his time effectively in addressing more critical issues. Chung Sye-kyun publicly shared his frustration that Lee would not have made such a statement if he was well aware of the government's efforts in containing the virus and vaccinating the public.
Throughout 2021, Lee was partially at odds with the central government over his plan to provide COVID-19 disaster relief funds to all residents of Gyeonggi Province.
Lee frequently stated in office, "I have kept an average of 95 percent of my campaign promises while serving the public", and "Even if I might have to experience a political loss, I believe in the collective intelligence of the public, and push forward on the right things in order to bring about results. That is my style". He resigned as governor to focus on his bid for the presidency in October 2021.
Following his narrow loss in the presidential election the same year, on 7 May 2022, Lee declared his candidacy in the June 2022 South Korean by-elections running for Incheon Gyeyang District B vacant seat in the National Assembly. Lee won the seat in the elections on 1 June 2022. Afterwards, he was elected as the leader of the Democratic Party of Korea on 28 August.
On 2 January 2024, Lee was stabbed in the left side of his neck while holding a question and answer session with reporters after touring the construction site of a planned new airport located on Gadeokdo in Busan. Though Lee remained conscious, he continued bleeding and was transferred to a hospital approximately 20 minutes later. The assailant, who was wearing a "I'm Lee Jae-myung" paper crown, lunged at Lee after asking for his autograph. The assailant was arrested at the scene. The assailant, who was male, was identified as having the surname "Kim" and was reported to have been born in 1957.
Though the neck wound was not considered to be life threatening, Lee's surgery took longer than expected, with damage being inflicted on his jugular vein that led to additional bleeding. The laceration in his neck which resulted from the knife wound was determined to be approximately 1 centimetre. While in custody, the assailant confessed to Busan Metropolitan Police that he carried out the attack with the intention of killing Lee.
Lee gained international attention in 2024 when, after President Yoon Suk Yeol declared martial law and attempted to stop the National Assembly from convening using the military, continued to go to the Assembly building anyway. Lee started a livestream on his YouTube channel, recording himself climbing the National Assembly building fence to bypass the military personnel. He called on people to gather in front of the Assembly building, and to "...keep protesting". The Democratic Party alleged that an arrest team had been sent to him, Han Dong-hoon, and Woo Won-shik, attempting to bring all three into custody. This was confirmed from testimony by National Intelligence Service (NIS) Deputy Director Hong Jang-won, who stated Yoon wanted to "use this chance to arrest [opposition leaders] and wipe them out."
He stated that he thought the martial law declaration was, initially, a deepfake. He afterwards led the charge to impeach Yoon, with himself frequently rallying against the President outside the Assembly building, claiming that Yoon committed treason. On impeachment, he stated that "Yoon will be impeached, if it's today, a month, or three months from now." Yoon was ultimately impeached by the National Assembly on 14 December.
In March 2025, Lee was cleared of a previous accusation of violating election law by a South Korean appeals court.
At the end of 2016, Park Geun-hye–Choi Soon-sil Gate broke. At a series of protests that took place across the country, Lee attracted national attention with his strong speeches, stating that "President Park Geun-hye is no longer our president". He ranked second in various public opinion polls after Moon Jae-in in the Democratic Party 2017 primary. An official from the leadership of the DP stated that "I think Lee Jae-myung's support rate can rise by up to 20% because the support of the loyal Democratic Party voters is highly concentrated. There is also an expectation that he may use a similar strategy to Roh Moo-hyun to significantly shore up his support in just a few regions." Lee was considered part of the progressive wing in the Democratic Party.
However, as the protests began to dim with the impeachment of the President and removal of her in favor of Hwang Kyo-ahn, Lee Jae-myung's approval rating, who was popular for his remarks on the scandal, also fell. In the end, Lee Jae-myung's first presidential election ended in him placing third in the primary, with 347,647 votes. He was second to Ahn Hee-jung, who placed second with 353,631 votes, and Moon Jae-in, who won 936,419 votes and a majority. He would go on to defeat Hong Joon-pyo, Ahn Cheol-soo, Yoo Seung-min, and Sim Sang-jung to win the Presidency.
Lee declared his bid in the 2022 presidential election in July 2021, and emphasized policies that would ensure equality for people of all backgrounds in the nation, and heighten Korea's standing abroad as a nation that provides public goods for global communities. "We are situated in a time of a great transformation," Lee said in a televised address immediately following his nomination. "My first objective, if I am elected president, would be to help Korea take the lead in fighting climate change, the global pandemic and the ever-speedy technological revolution. My second objective would be to help this nation achieve economic growth during this time of great struggle. When it comes to policies to boost the people's welfare and well-being, there is no left or right; there is no ideological differences. I am ready to try anything and everything if it means the people can lead better livelihoods."
Lee became the nominee of the Democratic Party of Korea on 10 October 2021. Lee won a majority of the votes in the primary and made it directly to the presidential election without a runoff. In his acceptance speech, Lee expressed his ambition to create the new Republic of Korea through reform and practice.
In the general election, Lee lost to Yoon Suk Yeol of the People Power Party, 47.8% to 48.6%.
Lee tends to run a policy platform close to the centre-left in the Democratic Party of Korea. Lee advocates for New Deal liberalism economically and respects the policies of Franklin D. Roosevelt. On 10 October 2021, Lee said "We will change the graph of economic growth upward with a strong state-led economic revival policy. I'll learn from Roosevelt, who overcame the Great Depression with left-wing policy (좌파 정책)".
Lee announced his overarching economic policy vision as "Transformative and Fair Growth". Lee's view on the Korean economy is that many problems have arisen from the slowdown of economic growth. Low growth leads to fewer opportunities for younger generations, causing fiercer competition and social unrest. This is especially relevant for Korea, as the rules and institutions that have been designed for a high-growth catch-up economy no longer work well for an advanced economy.
Lee asserts that the slowdown of economic growth is related to the unfairness and polarization in many areas of the economy: for example, the gap between big monopolies and small and medium-sized enterprises, the differences between platforms and irregular workers, and inequalities in the real estate market. Unfair conventions distort people's economic incentives in a way that encourages rent-seeking activities, causing serious inefficiency in resource allocation.
Another aspect that Lee sees as vital for the Korean economy is recent global trends in technological progress, such as energy and digital transformation, which could cause crises or provide new opportunities depending on policy responses.
Lee's growth strategy, "Transformative and Fair Growth" comprises a set of policies to make the economy fairer and more transformative. Innovations and transformation can be expedited on the basis of right incentives and fairer institutions. This strategy includes industrial policies for a "Green New Deal" and digital transformation, education reforms to help people adapt to the new environment, balancing market power among economic entities, measures for fair competition and labour market justice, and social safety nets to share risks related to the transformation.
His overall policy stance is close to social liberal and moderate-progressivism, but there are also some economic liberal tendencies, such as real estate tax cuts and partial corporate deregulation. This tendency toward economic liberalism has shifted to the right compared in recent years, and increased before and after the 2022 South Korean presidential election.
One of Lee's signature 2022 presidential campaign pledges was a promise to implement universal basic income. Lee implemented various basic income programs for residents during his time as mayor and governor.
During the 2022 campaign, Lee promised to introduce basic income to young people, farmers and fishermen first. Later, the program would expand to include all citizens, and the basic income amounts would increase. As part of this plan, Lee sought to link the basic income to a carbon tax and land value tax.
Lee pledged to introduce a universal basic income scheme at the national level for the first time in the world. He pledged to distribute 1,000,000 South Korean won (about US$900) per year to every citizen and ₩2,000,000 (about US$1,800) per year to youth aged between 19 and 29. Additional basic income would be considered for farmers, children, the elderly, and disabled people. Although the basic income program would start at a modest level, Lee indicated that the long-term goal is to increase basic income to ₩6,000,000 (about US$5,400) per year. Lee proposed the basic income plan would be financed by land value tax and carbon tax. Lee stressed that these taxes were necessary to curb real estate speculation and reduce carbon emissions.
Lee advocated for "basic loans," which would allow any citizen to take out government loans of up to ₩10,000,000 (US$8,750) at an interest rate of around 3 percent, regardless of their credit status. Lee advocated for these government-backed loan to the public as a safer alternative to borrowing money from loan sharks or private money lenders.
Lee emphasises the importance of data in digital transformation. During his tenure as the governor of Gyeonggi Province, Lee ordered that administrative official documents should use the open document format (ODF) instead of the previous Hangeul software. He also implemented the world's first data dividend, which returns the portion of the profit created by data-related business to the consumers who actually created the data. He used data analysis to combat African swine fever and prosecute illegal construction companies. He provided a mobile app to monitor the movements of COVID-19 confirmed patients without violating privacy and revealing personal information, using data encryption technology. Lee argues that the monopoly situation of big platform companies with network effects could be as an obstacle to fair growth of the digital sector, and argues that workers employed by platform enterprises should have new types of employment contracts so that they could be better protected in the digital era.
Lee states that South Korea should have future-oriented economic policies that take into account the role of artificial intelligence and its effect on society. He has stated that this shift will require government support to alleviate difficulties that might arise from the economic adjustment.
Lee Jae-myung is known to be a strong supporter of free trade. He opposes restrictions against South Korean semiconductor items due to U.S. trade protectionism.
One of Lee's election pledges was to avoid focusing on grades and numbers and instead proceed in the direction of strengthening student's capabilities. Lee said that in middle school teachers would determine student performance through summative assessments, and that he planned to launch a basic math curriculum through a 'high school credit system' in high school to make up for underachievement. He also suggested introducing AI-based personalized learning and evaluation in some subjects, such as mathematics, to strengthen individualized learning and evaluation throughout elementary and middle school.
Lee proposed an 'outdoor school' that fosters the challenges, adventures, cooperation, and curiosity necessary for adolescent growth. It promised to prepare and introduce a curriculum of about 10 hours per semester.
Lee promised universal basic income and universal basic loans specifically for youth. He planned to provide one-time employment benefits to youth that voluntarily resigned from a job, in order to support job searching and career development. Lee planned to lower student loan interest rates and allow university tuition to be proportional to the credits students take each semester. Lastly, he planned to provide universal basic housing to youth and reform the housing market to help low-income youth buy and own their own homes.
During the 2022 presidential election, Lee stated that he was positive on anti-discrimination laws, but was against abolishing the 'sodomy law' in the military and would not openly support the LGBTQ community. However, Lee stated more recently that he is against passing anti-discrimination laws with LGBTQ protection unilaterally without social consensus, and would not let it pass under his watch.
South Korean media characterized Lee Jae-Myung as being hostile to feminism and no different from his fellow 2022 presidential opponent Yoon Suk Yeol. On 8 November 2021, Lee distributed an article to participants of the National Election Commission stating, "If Lee Jae-Myung differentiates himself from the Moon Jae-in government's feminist-first policy, he can gain support from young men". On 10 November, Lee shared a post written by a supporter on DC Inside on his Facebook page, which read, "Candidate Lee Jae-Myung, please stop the 'feminism of madness' (of the Moon Jae-In government). If you promise to do so, I will vote [for you] with great pleasure".
Progressive politician Sim Sang-jung criticized Lee Jae-myung as a clear "anti-feminist". Ahn Cheol-soo, a centre-right conservative liberal, also criticized Lee Jae-myung's pledge on gender as "misogyny".
However, some point out that Lee Jae-Myung's remarks on feminism are more of a populist investigation than a real policy objection to women's rights. Lee Jae-Myung was pro-choice and advocated expanding the rights of abortion women in medical insurance. In this regard, it received positive reviews from feminists. Time magazine described Lee's women policy as "progressive".
He strongly opposes the "abolition of the Ministry of Gender Equality and Family" (여성가족부 폐지) supported by the right-wing conservative camp.
Lee criticized Yoon Suk-Yeol's claim that structural gender inequality and misogyny do not exist in modern South Korean society and insisted on resolving structural gender discrimination. Also Lee has called for a public apology for the Yoon Suk-Yeol's comments that women are no longer discriminated against.
In the 2022 presidential election in South Korea, Lee Jae-myung pledged to enact a dating violence punishment law, strengthen support for victims of sex crimes, stabilize housing for single-person female households, establish a sexist workplace report and supervision system, support sanitary pads, and free HPV vaccine.
Lee Jae-myung is a pro-immigrant rights politician. Lee criticizes conservatives' immigration policies for focusing on securing simple labor and is actively interested in the human rights of foreign workers. However, he is against mass immigration. His party opposed the establishment of immigration office.
Lee Jae-myung revealed his diplomats about the United States and neighboring countries China and Japan as presidential candidates, while seeking friendly relations with North Korea. Lee announced a comprehensive foreign policy plan on 22 August 2021. He emphasized that the aim of foreign policy should be focused on improving the quality of the people and it should be practical to enhance national interest.
Lee stated that he will continue the efforts of previous liberal presidents to conduct peace talks with North Korea, citing President Kim Dae-jung's Sunshine Policy, President Roh Moo-hyun's summit with Kim Jong Il, and President Moon Jae-in's peace talks with North Korea. Lee favours the approach of a conditional rollback of sanctions on North Korea if it takes steps to denuclearize. While he believes in easing of sanctions, he also advocates immediate restoration of sanctions if North Korea fails to keep its denuclearization promises.
Lee supports good trade relations with the US. He also believes in good relations with the US military, which has its main bases in his province. However, he has criticized the US-deployed THAAD anti-missile system for prompting Chinese economic retaliation. Later, he said that as the THAAD is already deployed, the country must make a new decision on the US-ROK alliance and the progress of denuclearisation of North Korea.
Lee expressed his position on the issue between the US and China in South Korea's foreign policy, saying that the US is Korea's only ally and that friendly relations with the US are the most important.
Lee stated that while the United States is South Korea's only ally, China is also a strategic partner. He said, "There is no reason to narrow our range of movement by choosing one or the other side. It is competent diplomacy to make the U.S. and China choose to cooperate with us."
In response to a Korean Chinese performer wearing a hanbok at the opening ceremony of the 2022 Beijing Winter Olympics, Lee criticized China for "robbing and invading" Korean culture. In 2022, Lee said that if a Chinese fishing boat illegally breaks into South Korean waters, he would sink it.
In 2024, Lee criticized President Yoon for unnecessarily "antagonizing" China and creating a trade deficit with the country for the first time in decades. He also criticized Yoon's administration on the issue of Taiwan, saying "We can simply say xie xie (thank you) to both [mainland] China and Taiwan... Why should we intervene in the Taiwan Strait issue?"
In regards to relations with Japan, Lee promotes a "two track strategy" to actively promote economic, social, and diplomatic exchange and cooperation while also resolutely dealing with historical issues, territorial sovereignty, and the life and safety of the people.
Lee has a certain pro-American tendency, such as strong support for military alliance and military cooperation with the United States, but he is very opposed to military training between the three countries in which Japan participates and accuses conservatives who support it as "far-right Chinil acts" (극단적 친일 행위).
In 2016, Lee Jae-myung said in an interview with an NHK reporter that Japan is South Korea's de facto 'enemy country' in military. He argues that if Japan increases its military power, it will be the first to invade South Korea. However, while critical of "Japanese imperialism" (일본 제국주의), Lee Jae-myung is not opposed to the South Korea-Japan military agreement, GSOMIA (지소미아), to maintain friendly relations with the United States, which calls for military cooperation between South Korea and Japan. GSOMIA is known to be what the United States demands from South Korea and Japan.
On 1 March 2018, Lee Jae-myung said that Japan which he referred to as "an aggressor country" (침략국가), rather than Korea, should have been divided into two countries following the Pacific War. Lee claimed that Korea, not Japan, was wrong to be divided.
Lee Jae-myung opposes the Russian invasion of Ukraine and does not oppose partial sanctions against Russia. However, he is considered to have a relatively friendly perception of Russia by South Korean standards. He did not give a hawkish speech against Russia, unlike when he criticized the United States, China, and Japan, but after the Russian Invasion of Ukraine, he criticized Volodymyr Zelenskyy's foreign policy toward Russia as 'incompetent' and 'provoking', causing controversy in South Korea. He strongly opposes South Korean conservatives' support for the possibility of arms aid to Ukraine, which he fears will negatively affect the South Korean economy.
Unlike most South Korean liberals, Lee Jae-Myung often speaks favorably of former dictator Park Chung Hee. Lee Jae-Myung said on 2 November 2021, "President Park Chung Hee created the Gyeongbu Expressway to open the way for manufacturing-oriented industrialization," adding, "The Lee Jae-Myung administration will build an 'energy highway' that will open a new future while speeding through the decarbonised era." The Dong-A Ilbo, a conservative media outlet in South Korea, said Lee Jae-Myung's state-led policies are closer to Park Chung Hee's authoritarianism than left-wing populism based on social equality.
When Lee Jae-Myung evaluated Chun Doo-hwan's economic performance favourably on 11 December 2021, he was criticized by South Korea's liberal camp. The Justice Party's Sim Sang-jung said of Lee Jae-myung, "You seem to have become a presidential candidate for the [conservative] People Power Party while trying to differentiate yourself from the Moon Jae-in government". The People Power Party's presidential candidate, Yoon Suk Yeol, sarcastically said, "You can be our party's presidential candidate". In an editorial to The Hankyoreh, a South Korean centre-left liberal journalist who was critical of the dictatorship in the past strongly criticized Lee Jae-myung for forgetting his (liberal) "values" to win the votes of conservative voters.
"Unanswered Questions," an investigative journalism television programme run by Seoul Broadcasting System, aired an episode questioning the links between the local mafia organisation in Seongnam, Lee, and Eun Soo-mi, the mayor who succeeded Lee.
During the 2018 gubernatorial election, actress Kim Boo-sun [ko] reported that she had an affair with Lee in 2007–2009.
In 2018 during the Gyeonggi gubernatorial election, Rep. Jeon Hae-cheol filed a complaint against the Twitter account @08_hkkim for publishing false information on elections. The police reported that they believed the account belonged to Lee's spouse. Prosecutors dropped the case, citing a lack of evidence.
In July 2020, the Supreme Court found Lee not guilty of breaching campaign law during a television debate for Gyeonggi provincial governor. In the debate, Lee denied that he had attempted to admit his brother to a psychiatric hospital. The Court and its lower courts determined that the allegation was true. However, deferring to freedom of expression during political campaigns, the Supreme Court said Lee did not "actively" distort the facts – and therefore did not breach campaign law – when he lied. Lee was represented by several lawyers including two former Supreme Court justices.
Lee Jae-Myung has been at the center of an investigation into corporate donations and favors during his mayoral administration of Seongnam since 2022. In response, the opposition has accused the government of trying to distract from their failures by launching an investigation against the leader of the opposition.
In January 2023, he was summoned to the prosecutor's office for questioning, marking the first time a politician had been questioned about a criminal case since the country's transition to democracy. In February 2023, a motion for Lee's arrest by the prosecution was rejected by the National Assembly in an unexpectedly close vote, with 30 members from Lee's party voting in favour of the motion in a secret vote.
In March 2023, Lee was indicted on bribery, corruption, breach of trust and conflict of interests charges. He was accused of colluding with a group of private property developers when he was mayor of Seongnam, to help them make more than 800 billion won from the project, whilst simultaneously inflicting enormous losses of nearly 490 million won on the city. He was also accused of receiving or demanding more than 18 billion won from four companies in bribes to fund a football club in the city, in return for favours in his capacity as the Mayor. Lee said the indictment was "not surprising at all" and denied the accusations. He claimed the investigation was politically motivated and led by the Yoon Administration to take down a political opponent.
In September 2023, Seoul prosecutors sought another motion to arrest Lee on corruption charges for giving special favours to a land developer in the Baekhyeon-dong neighbourhood and sending 8 million dollars to North Korea through the Ssangbangwool Group. On 21 September, the Democratic-majority National Assembly approved the motion, with a 149–136 vote, with dozens of his own party members voting to arrest him. On that day, Justice Minister Han Dong-hoon issued an arrest warrant for Lee, marking a historic first, as the motion passed during a heated plenary session with 136 lawmakers opposing it. He was released after the Seoul Central District Court rejected the arrest warrant on 27 September.
In June 2024, Lee was indicted again, on bribery charges in an alleged scheme to transfer funds to North Korea and facilitate a visit to Pyongyang. He was accused of asking an underwear company to illegally transfer $8 million to North Korea between 2019 and 2020, during his tenure as governor of Gyeonggi Province, to facilitate a visit. Lee denied the charges.
On 15 November 2024, Lee was convicted by the Seoul Central District Court of making false statements during his 2022 presidential campaign in violation of the Public Official Election Act and was given a one-year suspended prison sentence over his denial of acquaintanceship with Kim Moon-ki, a former executive of Seongnam Development Corporation that was behind a corruption-ridden development project in Seongnam. On 25 November, Lee was acquitted by the same court of instigating a witness in a related case to commit perjury. Lee appealed the Public Official Election Act verdict on November 21, and on 27 March 2025, the Seoul High Court acquitted Lee.
On 24 March 2025, Lee was fined 3 million won ($2,043) by the Seoul Central District Court for defying an order to testify in the Seongnam Development Corporation case for a second time. On 26 March, the Seoul High Court overturned Lee's conviction for perjury. On 28 March, Lee was again fined 5 million-won (US$3,407) by the Seoul Central District Court for refusing to testify in the Seongnam Development Corporation case for a third time.