# List of members of the National Assembly (South Korea), 2000–2004

The members of the sixteenth National Assembly of South Korea were elected on 13 April 2000. The Assembly sat from 30 May 2000 until 29 May 2004.

## Members elected in the 2000 election

| Province/city | Constituency | Member | Party |
| Seoul | Jongno | Chung In-bong | Grand National Party |
| Seoul | Jung | Chyung Dai-chul | Millennium Democratic Party |
| Seoul | Yongsan | Seol Song-woong | Millennium Democratic Party |
| Seoul | Seongdong | Im Jong-seok | Millennium Democratic Party |
| Seoul | Gwangjin A | Kim Young-choon | Grand National Party |
| Seoul | Gwangjin B | Choo Mi-ae | Millennium Democratic Party |
| Seoul | Dongdaemun A | Kim Hee-sun | Millennium Democratic Party |
| Seoul | Dongdaemun B | Kim Yung-koo | Grand National Party |
| Seoul | Jungnang A | Lee Sang-soo | Millennium Democratic Party |
| Seoul | Jungnang B | Kim Duk-kyu | Millennium Democratic Party |
| Seoul | Seongbuk A | Yoo Jay-kun | Millennium Democratic Party |
| Seoul | Seongbuk B | Shin Geh-ryoon | Millennium Democratic Party |
| Seoul | Gangbuk A | Kim Won-gil | Millennium Democratic Party |
| Seoul | Gangbuk B | Chough Soon-hyung | Millennium Democratic Party |
| Seoul | Dobong A | Kim Geun-tae | Millennium Democratic Party |
| Seoul | Dobong B | Sul Hoon | Millennium Democratic Party |
| Seoul | Nowon A | Ham Seung-heui | Millennium Democratic Party |
| Seoul | Nowon B | Lim Chae-jung | Millennium Democratic Party |
| Seoul | Eunpyeong A | Kang In-sup | Grand National Party |
| Seoul | Eunpyeong B | Lee Jae-oh | Grand National Party |
| Seoul | Seodaemun A | Lee Sung-hun | Grand National Party |
| Seoul | Seodaemun B | Chang Che-shik | Millennium Democratic Party |
| Seoul | Mapo A | Park Myung-hwan | Grand National Party |
| Seoul | Mapo B | Park Joo-cheon | Grand National Party |
| Seoul | Yangcheon A | Won Hee-ryong | Grand National Party |
| Seoul | Yangcheon B | Kim Yung-bae | Millennium Democratic Party |
| Seoul | Gangseo A | Shin Ki-nam | Millennium Democratic Party |
| Seoul | Gangseo B | Kim Seong-ho | Millennium Democratic Party |
| Seoul | Guro A | Kim Ki-bae | Grand National Party |
| Seoul | Guro B | Chang Young-shin | Millennium Democratic Party |
| Seoul | Geumcheon | Jang Sung-min | Millennium Democratic Party |
| Seoul | Yeongdeungpo A | Kim Myung-sup | Millennium Democratic Party |
| Seoul | Yeongdeungpo B | Kim Min-seok | Millennium Democratic Party |
| Seoul | Dongjak A | Suh Chung-won | Grand National Party |
| Seoul | Dongjak B | Yoo Yong-tae | Millennium Democratic Party |
| Seoul | Gwanak A | Lee Hoon-pyung | Millennium Democratic Party |
| Seoul | Gwanak B | Lee Hae-chan | Millennium Democratic Party |
| Seoul | Seocho A | Park Won-hong | Grand National Party |
| Seoul | Seocho B | Kim Deog-ryong | Grand National Party |
| Seoul | Gangnam A | Choe Byung-yul | Grand National Party |
| Seoul | Gangnam B | Oh Se-hoon | Grand National Party |
| Seoul | Songpa A | Maeng Hyung-kyu | Grand National Party |
| Seoul | Songpa B | Kim Sung-soon | Millennium Democratic Party |
| Seoul | Gangdong A | Lee Bu-young | Grand National Party |
| Seoul | Gangdong B | Shim Jae-kwon | Millennium Democratic Party |
| Busan | Jung–Dong | Chung Ui-hwa | Grand National Party |
| Busan | Seo | Chung Moon-hwa | Grand National Party |
| Busan | Yeongdo | Kim Hyong-o | Grand National Party |
| Busan | Busanjin A | Chung Jey-moon | Grand National Party |
| Busan | Busanjin B | Do Jong-yee | Grand National Party |
| Busan | Dongrae | Park Kwan-yong | Grand National Party |
| Busan | Nam | Kim Moo-sung | Grand National Party |
| Busan | Buk–Gangseo A | Chung Hyung-keun | Grand National Party |
| Busan | Buk–Gangseo B | Huh Tae-yeol | Grand National Party |
| Busan | Haeundae–Gijang A | Shon Tae-in | Grand National Party |
| Busan | Haeundae–Gijang B | An Kyung-ryul | Grand National Party |
| Busan | Saha A | Eom Ho-sung | Grand National Party |
| Busan | Saha B | Park Chong-ung | Grand National Party |
| Busan | Geumjeong | Kim Jin-jae | Grand National Party |
| Busan | Yeonje | Kwon Tae-mang | Grand National Party |
| Busan | Suyeong | Yoo Heung-soo | Grand National Party |
| Busan | Sasang | Kwon Chul-hyun | Grand National Party |
| Daegu | Jung | Baek Seung-hong | Grand National Party |
| Daegu | Dong | Kang Shin-sung-yill | Grand National Party |
| Daegu | Seo | Kang Jae-sup | Grand National Party |
| Daegu | Nam | Hyun Sung-il | Grand National Party |
| Daegu | Buk A | Park Sung-kook | Grand National Party |
| Daegu | Buk B | Ahn Taek-soo | Grand National Party |
| Daegu | Suseong A | Kim Mahn-je | Grand National Party |
| Daegu | Suseong B | Yun Young-tak | Grand National Party |
| Daegu | Dalseo A | Park Jong-keun | Grand National Party |
| Daegu | Dalseo B | Lee Hae-bong | Grand National Party |
| Daegu | Dalseong | Park Geun-hye | Grand National Party |
| Incheon | Jung–Dong–Ongjin | Suh Sang-suhp | Grand National Party |
| Incheon | Nam A | Min Bong-gi | Grand National Party |
| Incheon | Nam B | Ahn Young-keun | Grand National Party |
| Incheon | Yeonsu | Hwang Woo-yea | Grand National Party |
| Incheon | Namdong A | Lee Yoon-sung | Grand National Party |
| Incheon | Namdong B | Lee Ho-woong | Millennium Democratic Party |
| Incheon | Bupyeong A | Park Sang-kyu | Millennium Democratic Party |
| Incheon | Bupyeong B | Choi Yong-gyu | Millennium Democratic Party |
| Incheon | Gyeyang | Song Young-gil | Millennium Democratic Party |
| Incheon | Seo–Ganghwa A | Cho Han-chun | Millennium Democratic Party |
| Incheon | Seo–Ganghwa B | Park Yong-ho | Millennium Democratic Party |
| Gwangju | Dong | Kim Kyung-cheon | Millennium Democratic Party |
| Gwangju | Seo | Chung Dong-chae | Millennium Democratic Party |
| Gwangju | Nam | Kang Woon-tae | Independent |
| Gwangju | Buk A | Park Kwang-tae | Millennium Democratic Party |
| Gwangju | Buk B | Kim Tae-hong | Millennium Democratic Party |
| Gwangju | Gwangsan | Jeon Kab-kil | Millennium Democratic Party |
| Daejeon | Dong | Lee Yang-hee | United Liberal Democrats |
| Daejeon | Jung | Kang Chang-hee | United Liberal Democrats |
| Daejeon | Seo A | Park Byeong-seug | Millennium Democratic Party |
| Daejeon | Seo B | Lee Jae-sun | United Liberal Democrats |
| Daejeon | Yuseong | Song Sok-chan | Millennium Democratic Party |
| Daejeon | Daedeok | Kim Won-wung | Grand National Party |
| Ulsan | Jung | Kim Tae-ho | Grand National Party |
| Ulsan | Nam | Choi Byung-gook | Grand National Party |
| Ulsan | Dong | Chung Mong-joon | Independent |
| Ulsan | Buk | Yoon Doo-hwan | Grand National Party |
| Ulsan | Ulju | Kwon Ki-sool | Grand National Party |
| Gyeonggi Province | Jangan, Suwon | Park Jong-hee | Grand National Party |
| Gyeonggi Province | Gwonseon, Suwon | Shin Hyun-tae | Grand National Party |
| Gyeonggi Province | Paldal, Suwon | Nam Kyung-pil | Grand National Party |
| Gyeonggi Province | Sujeong, Seongnam | Lee Yoon-soo | Millennium Democratic Party |
| Gyeonggi Province | Jungwon, Seongnam | Cho Sung-joon | Millennium Democratic Party |
| Gyeonggi Province | Bundang A, Seongnam | Ko Heung-kil | Grand National Party |
| Gyeonggi Province | Bundang B, Seongnam | Yim Tae-hee | Grand National Party |
| Gyeonggi Province | Uijeongbu | Moon Hee-sang | Millennium Democratic Party |
| Gyeonggi Province | Manan, Anyang | Lee Jong-kul | Millennium Democratic Party |
| Gyeonggi Province | Dongan, Anyang | Shim Jae-chul | Grand National Party |
| Gyeonggi Province | Wonmi A, Bucheon | An Dong-seon | Millennium Democratic Party |
| Gyeonggi Province | Wonmi B, Bucheon | Bae Ki-sun | Millennium Democratic Party |
| Gyeonggi Province | Sosa, Bucheon | Kim Moon-soo | Grand National Party |
| Gyeonggi Province | Ojeong, Bucheon | Choi Seon-young | Millennium Democratic Party |
| Gyeonggi Province | Gwangmyeong | Sohn Hak-kyu | Grand National Party |
| Gyeonggi Province | Pyeongtaek A | Won Yoo-chul | Millennium Democratic Party |
| Gyeonggi Province | Pyeongtaek B | Jung Jang-seon | Millennium Democratic Party |
| Gyeonggi Province | Dongducheon–Yangju | Mok Yo-sang | Grand National Party |
| Gyeonggi Province | Ansan A | Kim Young-hwan | Millennium Democratic Party |
| Gyeonggi Province | Ansan B | Chun Jung-bae | Millennium Democratic Party |
| Gyeonggi Province | Deokyang A, Goyang | Kwack Chi-young | Millennium Democratic Party |
| Gyeonggi Province | Deokyang B, Goyang | Lee Keun-jin | Millennium Democratic Party |
| Gyeonggi Province | Ilsan A, Goyang | Jong Bum-goo | Millennium Democratic Party |
| Gyeonggi Province | Ilsan B, Goyang | Kim Deok-bae | Millennium Democratic Party |
| Gyeonggi Province | Gwacheon–Uiwang | Ahn Sang-soo | Grand National Party |
| Gyeonggi Province | Guri | Jun Yong-won | Grand National Party |
| Gyeonggi Province | Namyangju | Cho Jung-moo | Grand National Party |
| Gyeonggi Province | Osan–Hwaseong | Kang Sung-koo | Millennium Democratic Party |
| Gyeonggi Province | Siheung | Park Byung-yoon | Millennium Democratic Party |
| Gyeonggi Province | Gunpo | Kim Boo-kyum | Grand National Party |
| Gyeonggi Province | Hanam | You Sung-keun | Grand National Party |
| Gyeonggi Province | Paju | Lee Jai-chang | Grand National Party |
| Gyeonggi Province | Icheon | Lee Hee-kyu | Millennium Democratic Party |
| Gyeonggi Province | Yongin A | Namgoong Seuk | Millennium Democratic Party |
| Gyeonggi Province | Yongin B | Kim Yun-seek | Millennium Democratic Party |
| Gyeonggi Province | Anseong | Sim Kyu-sub | Millennium Democratic Party |
| Gyeonggi Province | Gimpo | Park Chong-woo | Millennium Democratic Party |
| Gyeonggi Province | Yeoju | Rhee Q-taek | Grand National Party |
| Gyeonggi Province | Gwangju County | Park Hyuk-kyu | Grand National Party |
| Gyeonggi Province | Yeoncheon–Pocheon | Lee Han-dong | United Liberal Democrats |
| Gyeonggi Province | Gapyeong–Yangpyeong | Choung Byoung-gug | Grand National Party |
| Gangwon Province | Chuncheon | Han Seung-soo | Democratic People's Party |
| Gangwon Province | Wonju | Lee Chang-bok | Millennium Democratic Party |
| Gangwon Province | Gangneung | Choi Don-woung | Grand National Party |
| Gangwon Province | Donghae–Samcheok | Choi Yeon-hee | Grand National Party |
| Gangwon Province | Taebaek–Jeongseon | Kim Taek-kee | Millennium Democratic Party |
| Gangwon Province | Sokcho–Goseong–Yangyang–Inje | Song Hun-suk | Millennium Democratic Party |
| Gangwon Province | Hongcheon–Hoengseong | Yu Jae-kyu | Millennium Democratic Party |
| Gangwon Province | Yeongwol–Pyeongchang | Kim Yong-hak | Grand National Party |
| Gangwon Province | Cheolwon–Hwacheon–Yanggu | Lee Yong-sam | Millennium Democratic Party |
| North Chungcheong Province | Sangdang, Cheongju | Hong Jae-hyong | Millennium Democratic Party |
| North Chungcheong Province | Heungdeok, Cheongju | Yoon Kyeong-sig | Grand National Party |
| North Chungcheong Province | Chungju | Lee Won-sung | Millennium Democratic Party |
| North Chungcheong Province | Jecheon–Danyang | Song Kwang-ho | United Liberal Democrats |
| North Chungcheong Province | Cheongwon | Shin Kyung-shik | Grand National Party |
| North Chungcheong Province | Boeun–Okcheon–Yeongdong | Shim Kyu-cheol | Grand National Party |
| North Chungcheong Province | Jincheon–Gwisan–Eumseong | Chung Woo-taik | United Liberal Democrats |
| South Chungcheong Province | Cheonan A | Jeon Yong-hak | Millennium Democratic Party |
| South Chungcheong Province | Cheonan B | Ham Suk-jae | United Liberal Democrats |
| South Chungcheong Province | Gongju–Yeongi | Chung Jin-suk | United Liberal Democrats |
| South Chungcheong Province | Boryeong–Seocheon | Kim Yong-hwan | New Korea Party of Hope |
| South Chungcheong Province | Asan | Won Churll-hee | United Liberal Democrats |
| South Chungcheong Province | Seosan–Taean | Moon Seok-ho | Millennium Democratic Party |
| South Chungcheong Province | Nonsan–Geumsan | Rhee In-je | Millennium Democratic Party |
| South Chungcheong Province | Buyeo | Kim Hak-won | United Liberal Democrats |
| South Chungcheong Province | Cheongyang–Hongseong | Lee One-ku | United Liberal Democrats |
| South Chungcheong Province | Yesan | Oh Jang-seop | United Liberal Democrats |
| South Chungcheong Province | Dangjin | Song Young-jin | Millennium Democratic Party |
| North Jeolla Province | Wansan, Jeonju | Chang Young-dal | Millennium Democratic Party |
| North Jeolla Province | Deokjin, Jeonju | Chung Dong-young | Millennium Democratic Party |
| North Jeolla Province | Gunsan | Kang Hyun-wook | Millennium Democratic Party |
| North Jeolla Province | Iksan | Lee Hyup | Millennium Democratic Party |
| North Jeolla Province | Jeongeup | Kim Won-ki | Millennium Democratic Party |
| North Jeolla Province | Namwon–Sunchang | Lee Kang-rae | Independent |
| North Jeolla Province | Gimje | Chang Sung-won | Millennium Democratic Party |
| North Jeolla Province | Wanju–Imsil | Kim Tai-shik | Millennium Democratic Party |
| North Jeolla Province | Jinan–Muju–Jangsu | Chung Sye-kyun | Millennium Democratic Party |
| North Jeolla Province | Gochang–Buan | Chung Kyun-hwan | Millennium Democratic Party |
| South Jeolla Province | Mokpo | Kim Hong-il | Millennium Democratic Party |
| South Jeolla Province | Yeosu | Kim Choong-joh | Millennium Democratic Party |
| South Jeolla Province | Suncheon | Kim Kyung-jae | Millennium Democratic Party |
| South Jeolla Province | Naju | Bae Ki-woon | Millennium Democratic Party |
| South Jeolla Province | Gwangyang–Gurye | Chung Chul-ki | Millennium Democratic Party |
| South Jeolla Province | Damyang–Gokseong–Jangseong | Kim Hyo-seuk | Millennium Democratic Party |
| South Jeolla Province | Goheung | Park Sang-cheon | Millennium Democratic Party |
| South Jeolla Province | Boseong–Hwasun | Park Joo-sun | Independent |
| South Jeolla Province | Jangheung–Yeongam | Kim Ok-doo | Millennium Democratic Party |
| South Jeolla Province | Gangjin–Wando | Chun Yong-taek | Millennium Democratic Party |
| South Jeolla Province | Haenam–Jindo | Lee Jung-il | Independent |
| South Jeolla Province | Muan–Sinan | Hahn Hwa-kap | Millennium Democratic Party |
| South Jeolla Province | Hampyeong–Yeonggwang | Lee Nak-yon | Millennium Democratic Party |
| North Gyeongsang Province | Buk, Pohang | Lee Byung-suk | Grand National Party |
| North Gyeongsang Province | Nam, Pohang–Ulleung | Lee Sang-deuk | Grand National Party |
| North Gyeongsang Province | Gyeongju | Kim Il-yun | Grand National Party |
| North Gyeongsang Province | Gimcheon | Rim In-bae | Grand National Party |
| North Gyeongsang Province | Andong | Kwon Oh-eul | Grand National Party |
| North Gyeongsang Province | Gumi | Kim Seong-jo | Grand National Party |
| North Gyeongsang Province | Yeongju | Park Si-kyun | Grand National Party |
| North Gyeongsang Province | Yeongcheon | Park Heon-ki | Grand National Party |
| North Gyeongsang Province | Sangju | Lee Sang-bae | Grand National Party |
| North Gyeongsang Province | Mungyeong–Yecheon | Shin Yung-kook | Grand National Party |
| North Gyeongsang Province | Gyeongsan–Cheongdo | Park Jae-wook | Grand National Party |
| North Gyeongsang Province | Goryeong–Seongju | Choo Jin-woo | Grand National Party |
| North Gyeongsang Province | Gunwi–Uiseong | Chung Chang-wha | Grand National Party |
| North Gyeongsang Province | Chilgok | Lee In-ki | Grand National Party |
| North Gyeongsang Province | Cheongsong–Yongyang–Yeongdeok | Kim Chan-woo | Grand National Party |
| North Gyeongsang Province | Bonghwa–Uljin | Kim Kwang-won | Grand National Party |
| South Gyeongsang Province | Changwon A | Kim Jong-ha | Grand National Party |
| South Gyeongsang Province | Changwon B | Lee Ju-young | Grand National Party |
| South Gyeongsang Province | Hampo, Masan | Kim Ho-il | Grand National Party |
| South Gyeongsang Province | Hoewon, Masan | Kang Sam-jae | Grand National Party |
| South Gyeongsang Province | Jinju | Ha Soon-bong | Grand National Party |
| South Gyeongsang Province | Jinhae | Kim Hak-song | Grand National Party |
| South Gyeongsang Province | Tongyeong–Goseong | Kim Dong-wook | Grand National Party |
| South Gyeongsang Province | Sacheon | Lee Bang-ho | Grand National Party |
| South Gyeongsang Province | Gimhae | Kim Young-iel | Grand National Party |
| South Gyeongsang Province | Milyang–Changnyeong | Kim Yong-kap | Grand National Party |
| South Gyeongsang Province | Geoje | Kim Ki-choon | Grand National Party |
| South Gyeongsang Province | Yangsan | Lah Oh-yeon | Grand National Party |
| South Gyeongsang Province | Uiryeong–Haman | Yun Han-doo | Grand National Party |
| South Gyeongsang Province | Namhae–Hadong | Park Hee-tae | Grand National Party |
| South Gyeongsang Province | Sancheong–Hapcheon | Kim Yong-kyun | Grand National Party |
| South Gyeongsang Province | Hamyang–Geochang | Lee Kang-too | Grand National Party |
| Jeju Province | Jeju City | Hyun Kyung-dae | Grand National Party |
| Jeju Province | Bukjeju | Jang Jung-un | Millennium Democratic Party |
| Jeju Province | Seogwipo–Namjeju | Ko Jin-boo | Millennium Democratic Party |
| National | Proportional representation | Lee Hoi-chang | Grand National Party |
| National | Proportional representation | Hong Sa-duk | Grand National Party |
| National | Proportional representation | Lee Yun-sook | Grand National Party |
| National | Proportional representation | Kang Chang-sung | Grand National Party |
| National | Proportional representation | Shin Young-kyun | Grand National Party |
| National | Proportional representation | Suh Chung-hwa | Grand National Party |
| National | Proportional representation | Rhee Shang-hi | Grand National Party |
| National | Proportional representation | Park Se-hawn | Grand National Party |
| National | Proportional representation | Jeon Jae-hee | Grand National Party |
| National | Proportional representation | Cho Woong-kyu | Grand National Party |
| National | Proportional representation | Yoon Yeo-joon | Grand National Party |
| National | Proportional representation | Lee Hahn-koo | Grand National Party |
| National | Proportional representation | Kim Jung-sook | Grand National Party |
| National | Proportional representation | Kim Rak-ki | Grand National Party |
| National | Proportional representation | Park Chang-dal | Grand National Party |
| National | Proportional representation | Kim Hong-shin | Grand National Party |
| National | Proportional representation | Lee Won-chang | Grand National Party |
| National | Proportional representation | Hwang Seung-min | Grand National Party |
| National | Proportional representation | Lim Jin-chool | Grand National Party |
| National | Proportional representation | Lee Won-hyung | Grand National Party |
| National | Proportional representation | Son Hi-jung | Grand National Party |
| National | Proportional representation | Suh Young-hoon | Millennium Democratic Party |
| National | Proportional representation | Choi Young-hee | Millennium Democratic Party |
| National | Proportional representation | Jang Tae-wan | Millennium Democratic Party |
| National | Proportional representation | Lee Man-sup | Millennium Democratic Party |
| National | Proportional representation | Han Myeong-sook | Millennium Democratic Party |
| National | Proportional representation | Kim Un-yong | Millennium Democratic Party |
| National | Proportional representation | Park In-sang | Millennium Democratic Party |
| National | Proportional representation | Lee Mi-kyung | Millennium Democratic Party |
| National | Proportional representation | Park Sang-hee | Millennium Democratic Party |
| National | Proportional representation | Lee Jae-joung | Millennium Democratic Party |
| National | Proportional representation | Huh Un-na | Millennium Democratic Party |
| National | Proportional representation | Choi Jae-seung | Millennium Democratic Party |
| National | Proportional representation | Kim Han-gil | Millennium Democratic Party |
| National | Proportional representation | Kim Bang-rim | Millennium Democratic Party |
| National | Proportional representation | Kim Ki-jai | Millennium Democratic Party |
| National | Proportional representation | Kim Young-jin | Millennium Democratic Party |
| National | Proportional representation | Yoon Chul-sang | Millennium Democratic Party |
| National | Proportional representation | Cho Jae-hwan | Millennium Democratic Party |
| National | Proportional representation | Yu Sam-nam | Millennium Democratic Party |
| National | Proportional representation | Kim Jong-pil | United Liberal Democrats |
| National | Proportional representation | Cho Hee-wook | United Liberal Democrats |
| National | Proportional representation | Kim Chong-hoh | United Liberal Democrats |
| National | Proportional representation | Cho Boo-young | United Liberal Democrats |
| National | Proportional representation | Ahn Dae-ryun | United Liberal Democrats |
| National | Proportional representation | Kang Sook-ja | Democratic People's Party |

## Changes in membership

| Date | Constituency | Incumbent | Party | New member | Party | Notes |
| 20 September 2000 | Proportional representation | Kim Han-gil | Millennium Democratic | Kim Hwa-joong | Millennium Democratic | Incumbent resigned on 20 September 2000 upon appointment as Minister of Culture and Tourism; replaced by the next member in the Millennium Democratic list. |
| 28 December 2000 | Proportional representation | Suh Young-hoon | Millennium Democratic | Choi Myun-hun | Millennium Democratic | Incumbent lost seat on 28 December 2000; replaced by the next member in the Millennium Democratic list. |
| 28 January 2001 | Proportional representation | Han Myeong-sook | Millennium Democratic | Park Yang-soo | Millennium Democratic | Incumbent resigned on 28 January 2001 upon appointment as Minister of Gender Equality; replaced by the next member in the Millennium Democratic list. |
| 7 September 2001 | Proportional representation | Yu Sam-nam | Millennium Democratic | Cho Bae-sook | Millennium Democratic | Incumbent resigned on 7 September 2001 upon appointment as Minister of Oceans and Fisheries; replaced by the next member in the Millennium Democratic list. |
| 25 October 2001 | Dongdaemun B, Seoul | Kim Yung-koo | Grand National | Hong Joon-pyo | Grand National | Incumbent's election invalidated on 1 June 2001. New member by-elected. |
| 25 October 2001 | Guro B, Seoul | Chang Young-shin | Millennium Democratic | Lee Seung-chul | Grand National | Incumbent's election invalidated on 13 July 2001. New member by-elected. |
| 25 October 2001 | Gangneung, Gangwon Province | Choi Don-woung | Grand National | Choi Don-woung | Grand National | Incumbent resigned on 3 September 2001; re-elected in the by-election. |
| 22 July 2002 | Proportional representation | Jeon Jae-hee | Grand National | Kim Young-sun | Grand National | Incumbent resigned on 22 July 2002 to run in the 2002 Gwangmyeong, Gyeonggi Province by-election; replaced by the next member in the Grand National list. |
| 8 August 2002 | Jongno, Seoul | Chung In-bong | Grand National | Park Jin | Grand National | Incumbent's election invalidated on 25 June 2002. New member by-elected. |
| 8 August 2002 | Geumcheon, Seoul | Jang Sung-min | Millennium Democratic | Lee Woo-jae | Grand National | Incumbent's election invalidated on 22 January 2002. New member by-elected. |
| 8 August 2002 | Yeongdeungpo B, Seoul | Kim Min-seok | Millennium Democratic | Kwon Young-se | Grand National | Incumbent's election invalidated on 27 May 2002. New member by-elected. |
| 8 August 2002 | Busanjin A, Busan | Chung Jey-moon | Grand National | Kim Byung-ho | Grand National | Incumbent's election invalidated on 28 June 2002. New member by-elected. |
| 8 August 2002 | Haeundae–Gijang A, Busan | Shon Tae-in | Grand National | Suh Byung-soo | Grand National | Incumbent died on 5 January 2002. New member by-elected. |
| 8 August 2002 | Seo–Ganghwa B, Incheon | Park Yong-ho | Millennium Democratic | Lee Kyeong-jae | Grand National | Incumbent's election invalidated on 14 June 2002. New member by-elected. |
| 8 August 2002 | Buk A, Gwangju | Park Kwang-tae | Millennium Democratic | Kim Song-hyum | Millennium Democratic | Incumbent resigned on 1 July 2002 upon start of term as Mayor of Daegu. New member by-elected. |
| 8 August 2002 | Gwangmyeong, Gyeonggi Province | Sohn Hak-kyu | Grand National | Jeon Jae-hee | Grand National | Incumbent resigned on 1 July 2002 upon start of term as Governor of Gyeonggi Province. New member by-elected. |
| 8 August 2002 | Hanam, Gyeonggi Province | You Sung-keun | Grand National | Kim Hwang-sik | Grand National | Incumbent's election invalidated on 24 May 2002. New member by-elected. |
| 8 August 2002 | Anseong, Gyeonggi Province | Sim Kyu-sub | Millennium Democratic | Lee Hae-koo | Grand National | Incumbent died on 27 January 2002. New member by-elected. |
| 8 August 2002 | Gunsan, North Jeolla Province | Kang Hyun-wook | Millennium Democratic | Kang Bong-kyun | Millennium Democratic | Incumbent resigned on 1 July 2002 upon start of term as Governor of North Jeolla Province. New member by-elected. |
| 8 August 2002 | Hampo, Masan, South Gyeongsang Province | Kim Ho-il | Grand National | Kim Jung-boo | Grand National | Incumbent's election invalidated on 21 February 2002. New member by-elected. |
| 8 August 2002 | Bukjeju, Jeju Province | Jang Jung-un | Millennium Democratic | Yang Jung-kyu | Grand National | Incumbent's election invalidated on 28 June 2002. New member by-elected. |
| 26 November 2002 | Proportional representation | Lee Hoi-chang | Grand National | Yoo Han-yul | Grand National | Incumbent resigned on 26 November 2002 to run in the 2002 South Korean presidential election; replaced by the next member in the Grand National list. |
| 19 December 2002 | Jung, Ulsan | Kim Tae-ho | Grand National | Jeong Kab-yoon | Grand National | Incumbent died on 10 July 2002. New member by-elected. |
| 6 February 2003 | Proportional representation | Hwang Seung-min | Grand National | Jang Kwang-keun | Grand National | Incumbent died on 6 February 2003; replaced by the next member in the Grand National list. |
| 4 March 2003 | Proportional representation | Kim Hwa-joong | Millennium Democratic | Koo Jong-tae | Millennium Democratic | Incumbent resigned on 4 March 2003 upon appointment as Minister of Health and Welfare; replaced by the next member in the Millennium Democratic list. |
| 4 March 2003 | Proportional representation | Kim Young-jin | Millennium Democratic | Oh Young-sik | Millennium Democratic | Incumbent resigned on 4 March 2003 upon appointment as Minister of Agriculture; replaced by the next member in the Millennium Democratic list. |
| 24 April 2003 | Yangcheon B, Seoul | Kim Yung-bae | Millennium Democratic | O Gyeong-hun | Grand National | Incumbent's election invalidated on 28 March 2003. New member by-elected. |
| 24 April 2003 | Uijeongbu, Gyeonggi Province | Moon Hee-sang | Millennium Democratic | Hong Moon-jong | Grand National | Incumbent resigned on 7 March 2003 upon appointment as Chief of Staff to the President. New member by-elected. |
| 24 April 2003 | Deokyang A, Goyang, Gyeonggi Province | Kwack Chi-young | Millennium Democratic | Rhyu Si-min | People's Party for Reform | Incumbent's election invalidated on 26 November 2002. New member by-elected. |
| 21 October 2003 | Proportional representation | Lee Mi-kyung | Millennium Democratic | An Sang-hyun | Millennium Democratic | Incumbent lost seat on 21 October 2003; replaced by the next member in the Millennium Democratic list. |
| 21 October 2003 | Proportional representation | Lee Jae-joung | Millennium Democratic | Hwang Chang-joo | Millennium Democratic | Incumbent lost seat on 21 October 2003; replaced by the next member in the Millennium Democratic list. |
| 21 October 2003 | Proportional representation | Huh Un-na | Millennium Democratic | Park Jeong-when | Millennium Democratic | Incumbent lost seat on 21 October 2003; replaced by the next member in the Millennium Democratic list. |
| 21 October 2003 | Proportional representation | Park Yang-soo | Millennium Democratic | Han Chung-su | Millennium Democratic | Incumbent lost seat on 21 October 2003; replaced by the next member in the Millennium Democratic list. |
| 21 October 2003 | Proportional representation | Oh Young-sik | Millennium Democratic | Yang Seung-boo | Millennium Democratic | Incumbent lost seat on 21 October 2003; replaced by the next member in the Millennium Democratic list. |
| 9 December 2003 | Proportional representation | Kim Hong-shin | Grand National | Song Byeong-dae | Grand National | Incumbent lost seat on 9 December 2003; replaced by the next member in the Grand National list. |
| 12 December 2003 | Proportional representation | Cho Bae-sook | Millennium Democratic | Park Kum-ja | Millennium Democratic | Incumbent lost seat on 12 December 2003; replaced by the next member in the Millennium Democratic list. |
| 1 February 2004 | Proportional representation | Rhee Shang-hi | Grand National | Kim Young-gu | Grand National | Incumbent lost seat on 1 February 2004; replaced by the next member in the Grand National list. |
| 22 March 2004 | Proportional representation | Kim Chong-hoh | United Liberal Democrats | Byun Ung-jun | United Liberal Democrats | Incumbent lost seat on 22 March 2004; replaced by the next member in the United Liberal Democrats list. |
| 25 March 2004 | Proportional representation | Cho Woong-kyu | Grand National | Park Kyung-sub | Grand National | Incumbent lost seat on 25 March 2004; replaced by the next member in the Grand National list. |
| 29 March 2004 | Proportional representation | Lim Jin-chool | Grand National | Lee Man-jae | Grand National | Incumbent lost seat on 29 March 2004; replaced by the next member in the Grand National list. |
| 31 March 2004 | Proportional representation | Park In-sang | Millennium Democratic | Lee Jong-sung | Millennium Democratic | Incumbent lost seat on 31 March 2004; replaced by the next member in the Millennium Democratic list. |
| 21 May 2004 | Proportional representation | Park Jeong-when | Millennium Democratic | An Hi-ok | Millennium Democratic | Incumbent lost seat on 21 May 2004; replaced by the next member in the Millennium Democratic list. |