# List of members of the National Assembly (South Korea), 2004–2008

The members of the seventeenth National Assembly of South Korea were elected on 15 April 2004. The Assembly sat from 30 May 2004 until 29 May 2008.

## Members elected in the 2004 election

| Province/city | Constituency | Member | Party |
| Seoul | Jongno | Park Jin | Grand National Party |
| Seoul | Jung | Park Sung-vum | Grand National Party |
| Seoul | Yongsan | Chin Young | Grand National Party |
| Seoul | Seongdong A | Choi Jae-cheon | Uri Party |
| Seoul | Seongdong B | Im Jong-seok | Uri Party |
| Seoul | Gwangjin A | Kim Young-choon | Uri Party |
| Seoul | Gwangjin B | Kim Hyeong-joo | Uri Party |
| Seoul | Dongdaemun A | Kim Hee-sun | Uri Party |
| Seoul | Dongdaemun B | Hong Joon-pyo | Grand National Party |
| Seoul | Jungnang A | Lee Hwa-young | Uri Party |
| Seoul | Jungnang B | Kim Duk-kyu | Uri Party |
| Seoul | Seongbuk A | Yoo Jay-kun | Uri Party |
| Seoul | Seongbuk B | Shin Geh-ryoon | Uri Party |
| Seoul | Gangbuk A | Oh Young-sik | Uri Party |
| Seoul | Gangbuk B | Choe Kyoo-sik | Uri Party |
| Seoul | Dobong A | Kim Geun-tae | Uri Party |
| Seoul | Dobong B | Yoo Ihn-tae | Uri Party |
| Seoul | Nowon A | Chung Bong-ju | Uri Party |
| Seoul | Nowon B | Woo Won-shik | Uri Party |
| Seoul | Nowon C | Lim Chae-jung | Uri Party |
| Seoul | Eunpyeong A | Lee Mi-kyung | Uri Party |
| Seoul | Eunpyeong B | Lee Jae-oh | Grand National Party |
| Seoul | Seodaemun A | Woo Sang-ho | Uri Party |
| Seoul | Seodaemun B | Chung Doo-un | Grand National Party |
| Seoul | Mapo A | Noh Woong-rae | Uri Party |
| Seoul | Mapo B | Jung Cheong-rae | Uri Party |
| Seoul | Yangcheon A | Won Hee-ryong | Grand National Party |
| Seoul | Yangcheon B | Kim Nag-soon | Uri Party |
| Seoul | Gangseo A | Shin Ki-nam | Uri Party |
| Seoul | Gangseo B | Ro Hyu-song | Uri Party |
| Seoul | Guro A | Lee In-young | Uri Party |
| Seoul | Guro B | Kim Han-gil | Uri Party |
| Seoul | Geumcheon | Rhee Mok-hee | Uri Party |
| Seoul | Yeongdeungpo A | Go Jin-hwa | Grand National Party |
| Seoul | Yeongdeungpo B | Kwon Young-se | Grand National Party |
| Seoul | Dongjak A | Jun Byung-hun | Uri Party |
| Seoul | Dongjak B | Lee Kye-ahn | Uri Party |
| Seoul | Gwanak A | Yoo Ki-hong | Uri Party |
| Seoul | Gwanak B | Lee Hae-chan | Uri Party |
| Seoul | Seocho A | Lee Hye-hoon | Grand National Party |
| Seoul | Seocho B | Kim Deog-ryong | Grand National Party |
| Seoul | Gangnam A | Lee Jong-koo | Grand National Party |
| Seoul | Gangnam B | Gong Sung-jin | Grand National Party |
| Seoul | Songpa A | Maeng Hyung-kyu | Grand National Party |
| Seoul | Songpa B | Park Gye-dong | Grand National Party |
| Seoul | Songpa C | Lee Keun-sik | Uri Party |
| Seoul | Gangdong A | Kim Choong-whan | Grand National Party |
| Seoul | Gangdong B | Lee Sang-kyeong | Uri Party |
| Busan | Jung–Dong | Chung Ui-hwa | Grand National Party |
| Busan | Seo | Yoo Ki-june | Grand National Party |
| Busan | Yeongdo | Kim Hyong-o | Grand National Party |
| Busan | Busanjin A | Kim Byung-ho | Grand National Party |
| Busan | Busanjin B | Lee Seong-kweun | Grand National Party |
| Busan | Dongrae | Lee Jae-woong | Grand National Party |
| Busan | Nam A | Kim Jung-hoon | Grand National Party |
| Busan | Nam B | 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 | Suh Byung-soo | 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 | Cho Kyoung-tae | Uri Party |
| Busan | Geumjeong | Park Seung-hwan | Grand National Party |
| Busan | Yeonje | Kim Hee-jung | Grand National Party |
| Busan | Suyeong | Park Hyung-joon | Grand National Party |
| Busan | Sasang | Kwon Chul-hyun | Grand National Party |
| Daegu | Jung–Nam | Koak Sung-moon | Grand National Party |
| Daegu | Dong A | Joo Sung-young | Grand National Party |
| Daegu | Dong B | Park Chang-dal | Grand National Party |
| Daegu | Seo | Kang Jae-sup | Grand National Party |
| Daegu | Buk A | Lee Myung-gyu | Grand National Party |
| Daegu | Buk B | Ahn Taek-soo | Grand National Party |
| Daegu | Suseong A | Lee Hahn-koo | Grand National Party |
| Daegu | Suseong B | Joo Ho-young | Grand National Party |
| Daegu | Dalseo A | Park Jong-keun | Grand National Party |
| Daegu | Dalseo B | Lee Hae-bong | Grand National Party |
| Daegu | Dalseo C | Kim Suk-joon | Grand National Party |
| Daegu | Dalseong | Park Geun-hye | Grand National Party |
| Incheon | Jung–Dong–Ongjin | Han Kwang-won | Uri Party |
| Incheon | Nam A | Yu Phil-u | Uri Party |
| Incheon | Nam B | Ahn Young-keun | Uri Party |
| Incheon | Yeonsu | Hwang Woo-yea | Grand National Party |
| Incheon | Namdong A | Lee Yoon-sung | Grand National Party |
| Incheon | Namdong B | Lee Ho-woong | Uri Party |
| Incheon | Bupyeong A | Moon Byeong-ho | Uri Party |
| Incheon | Bupyeong B | Choi Yong-gyu | Uri Party |
| Incheon | Gyeyang A | Shin Hak-young | Uri Party |
| Incheon | Gyeyang B | Song Young-gil | Uri Party |
| Incheon | Seo–Ganghwa A | Kim Kyo-heung | Uri Party |
| Incheon | Seo–Ganghwa B | Lee Kyeong-jae | Grand National Party |
| Gwangju | Dong | Yang Hyung-il | Uri Party |
| Gwangju | Seo A | Yum Dong-yun | Uri Party |
| Gwangju | Seo B | Chung Dong-chae | Uri Party |
| Gwangju | Nam | Jee Byung-moon | Uri Party |
| Gwangju | Buk A | Kang Gi-jung | Uri Party |
| Gwangju | Buk B | Kim Tae-hong | Uri Party |
| Gwangju | Gwangsan | Kim Dong-cheol | Uri Party |
| Daejeon | Dong | Sun Byong-ryul | Uri Party |
| Daejeon | Jung | Kwon Sun-taik | Uri Party |
| Daejeon | Seo A | Park Byeong-seug | Uri Party |
| Daejeon | Seo B | Ku Non-hoe | Uri Party |
| Daejeon | Yuseong | Lee Sang-min | Uri Party |
| Daejeon | Daedeok | Kim Won-wung | Uri Party |
| Ulsan | Jung | Jeong Kab-yoon | Grand National Party |
| Ulsan | Nam A | Choi Byung-gook | Grand National Party |
| Ulsan | Nam B | Kim Gi-hyeon | Grand National Party |
| Ulsan | Dong | Chung Mong-joon | National Integration 21 |
| Ulsan | Buk | Cho seung-soo | Democratic Labor Party |
| Ulsan | Ulju | Kang Ghil-boo | Uri Party |
| Gyeonggi Province | Jangan, Suwon | Sim Jae-duck | Uri Party |
| Gyeonggi Province | Gwonseon, Suwon | Lee Ki-woo | Uri Party |
| Gyeonggi Province | Paldal, Suwon | Nam Kyung-pil | Grand National Party |
| Gyeonggi Province | Yeongtong, Suwon | Kim Jin-pyo | Uri Party |
| Gyeonggi Province | Sujeong, Seongnam | Kim Tae-nyeon | Uri Party |
| Gyeonggi Province | Jungwon, Seongnam | Lee Sang-rak | Uri 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 A | Moon Hee-sang | Uri Party |
| Gyeonggi Province | Uijeongbu B | Kang Sung-jong | Uri Party |
| Gyeonggi Province | Manan, Anyang | Lee Jong-kul | Uri Party |
| Gyeonggi Province | Dongan A, Anyang | Lee Seok-hyun | Uri Party |
| Gyeonggi Province | Dongan B, Anyang | Shim Jae-chul | Grand National Party |
| Gyeonggi Province | Wonmi A, Bucheon | Kim Ki-suk | Uri Party |
| Gyeonggi Province | Wonmi B, Bucheon | Bae Ki-sun | Uri Party |
| Gyeonggi Province | Sosa, Bucheon | Kim Moon-soo | Grand National Party |
| Gyeonggi Province | Ojeong, Bucheon | Won Hye-young | Uri Party |
| Gyeonggi Province | Gwangmyeong A | Lee Won-young | Uri Party |
| Gyeonggi Province | Gwangmyeong B | Jeon Jae-hee | Grand National Party |
| Gyeonggi Province | Pyeongtaek A | Woo Je-hang | Uri Party |
| Gyeonggi Province | Pyeongtaek B | Jung Jang-seon | Uri Party |
| Gyeonggi Province | Yangju–Dongducheon | Jung Sung-ho | Uri Party |
| Gyeonggi Province | Sangrok A, Ansan | Jang Kyung-su | Uri Party |
| Gyeonggi Province | Sangrok B, Ansan | Im Jong-in | Uri Party |
| Gyeonggi Province | Danwon A, Ansan | Chun Jung-bae | Uri Party |
| Gyeonggi Province | Danwon B, Ansan | Je Jong-geel | Uri Party |
| Gyeonggi Province | Deokyang A, Goyang | Rhyu Si-min | Uri Party |
| Gyeonggi Province | Deokyang B, Goyang | Choi Sung | Uri Party |
| Gyeonggi Province | Ilsan A, Goyang | Han Myeong-sook | Uri Party |
| Gyeonggi Province | Ilsan B, Goyang | Kim Young-sun | Grand National Party |
| Gyeonggi Province | Uiwang–Gwacheon | Ahn Sang-soo | Grand National Party |
| Gyeonggi Province | Guri | Yun Ho-jung | Uri Party |
| Gyeonggi Province | Namyangju A | Choi Jae-sung | Uri Party |
| Gyeonggi Province | Namyangju B | Park Ki-choon | Uri Party |
| Gyeonggi Province | Osan | An Min-suk | Uri Party |
| Gyeonggi Province | Hwaseong | Ahn Byong-yub | Uri Party |
| Gyeonggi Province | Siheung A | Baek Won-woo | Uri Party |
| Gyeonggi Province | Siheung B | Cho Jeong-sik | Uri Party |
| Gyeonggi Province | Gunpo | Kim Boo-kyum | Uri Party |
| Gyeonggi Province | Hanam | Moon Hak-jin | Uri Party |
| Gyeonggi Province | Paju | Lee Jai-chang | Grand National Party |
| Gyeonggi Province | Icheon–Yeoju | Rhee Q-taek | Grand National Party |
| Gyeonggi Province | Yongin A | Ooh Che-chang | Uri Party |
| Gyeonggi Province | Yongin B | Han Sun-kyo | Grand National Party |
| Gyeonggi Province | Anseong | Kim Seon-mi | Uri Party |
| Gyeonggi Province | Gimpo | Yoo Jeong-bok | Grand National Party |
| Gyeonggi Province | Gwangju | Park Hyuk-kyu | Grand National Party |
| Gyeonggi Province | Pocheon–Yeoncheon | Lee Chul-woo | Uri Party |
| Gyeonggi Province | Yangpyeong–Gapyeong | Choung Byoung-gug | Grand National Party |
| Gangwon Province | Chuncheon | Huh Cheon | Grand National Party |
| Gangwon Province | Wonju | Lee Ke-jin | Grand National Party |
| Gangwon Province | Gangneung | Shim Jae-yup | Grand National Party |
| Gangwon Province | Donghae–Samcheok | Choi Yeon-hee | Grand National Party |
| Gangwon Province | Sokcho–Goseong–Yangyang | Chung Moon-hun | Grand National Party |
| Gangwon Province | Hongcheon–Hoengseong | Cho Il-hyun | Uri Party |
| Gangwon Province | Taebaek–Yeongwol–Pyeongchang–Jeongseon | Lee Kwang-jae | Uri Party |
| Gangwon Province | Cheolwon–Hwacheon–Yanggu–Inje | Park Sei-hwan | Grand National Party |
| North Chungcheong Province | Sangdang, Cheongju | Hong Jae-hyong | Uri Party |
| North Chungcheong Province | Heungdeok A, Cheongju | Oh Jae-sae | Uri Party |
| North Chungcheong Province | Heungdeok B, Cheongju | Noh Young-min | Uri Party |
| North Chungcheong Province | Chungju | Lee Si-jong | Uri Party |
| North Chungcheong Province | Jecheon–Danyang | Suh Jae-kwan | Uri Party |
| North Chungcheong Province | Cheongwon | Byun Jae-il | Uri Party |
| North Chungcheong Province | Boeun–Okcheon–Yeongdong | Lee Yong-hee | Uri Party |
| North Chungcheong Province | Jeungpyeong–Jincheon–Gwisan–Eumseong | Kim Jong-yull | Uri Party |
| South Chungcheong Province | Cheonan A | Yang Seoung-jo | Uri Party |
| South Chungcheong Province | Cheonan B | Park Sang-don | Uri Party |
| South Chungcheong Province | Gongju–Yeongi | Oh Si-duck | Uri Party |
| South Chungcheong Province | Boryeong–Seocheon | Ryu Keun-chan | United Liberal Democrats |
| South Chungcheong Province | Asan | Bok Ki-wang | Uri Party |
| South Chungcheong Province | Seosan–Taean | Moon Seok-ho | Uri Party |
| South Chungcheong Province | Nonsan–Gyeryong–Geumsan | Rhee In-je | United Liberal Democrats |
| South Chungcheong Province | Buyeo–Cheongyang | Kim Hak-won | United Liberal Democrats |
| South Chungcheong Province | Hongseong–Yesan | Hong Moon-pyo | Grand National Party |
| South Chungcheong Province | Dangjin | Kim Nak-sung | United Liberal Democrats |
| North Jeolla Province | Wansan A, Jeonju | Chang Young-dal | Uri Party |
| North Jeolla Province | Wansan B, Jeonju | Lee Kwang-chol | Uri Party |
| North Jeolla Province | Deokjin, Jeonju | Chae Su-chan | Uri Party |
| North Jeolla Province | Gunsan | Kang Bong-kyun | Uri Party |
| North Jeolla Province | Iksan A | Han Byung-do | Uri Party |
| North Jeolla Province | Iksan B | Cho Bae-sook | Uri Party |
| North Jeolla Province | Jeongeup | Kim Won-ki | Uri Party |
| North Jeolla Province | Namwon–Sunchang | Lee Kang-rae | Uri Party |
| North Jeolla Province | Gimje–Wanju | Choi Kyu-sung | Uri Party |
| North Jeolla Province | Jinan–Muju–Jangsu–Imsil | Chung Sye-kyun | Uri Party |
| North Jeolla Province | Gochang–Buan | Kim Choon-jin | Uri Party |
| South Jeolla Province | Mokpo | Lee Sang-yul | Millennium Democratic Party |
| South Jeolla Province | Yeosu A | Kim Sung-gon | Uri Party |
| South Jeolla Province | Yeosu B | Joo Seung-yong | Uri Party |
| South Jeolla Province | Suncheon | Suh Gab-won | Uri Party |
| South Jeolla Province | Naju–Hwasun | Choi In-kee | Independent |
| South Jeolla Province | Gwangyang–Gurye | Woo Yoon-keun | Uri Party |
| South Jeolla Province | Damyang–Gokseong–Jangseong | Kim Hyo-seuk | Millennium Democratic Party |
| South Jeolla Province | Goheung–Boseong | Shin Jung-sik | Uri Party |
| South Jeolla Province | Jangheung–Yeongam | Lew Seon-ho | Uri Party |
| South Jeolla Province | Gangjin–Wando | Yi Young-ho | Uri Party |
| South Jeolla Province | Haenam–Jindo | Lee Jung-il | Millennium Democratic Party |
| 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 | Jung Jong-bok | 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 A | Kim Seong-jo | Grand National Party |
| North Gyeongsang Province | Gumi B | Kim Tae-whan | Grand National Party |
| North Gyeongsang Province | Yeongju | Chang Yoon-seok | Grand National Party |
| North Gyeongsang Province | Yeongcheon | Lee Duk-mo | Grand National Party |
| North Gyeongsang Province | Sangju | Lee Sang-bae | Grand National Party |
| North Gyeongsang Province | Mungyeong–Yecheon | Shin Kook-hwan | Independent |
| North Gyeongsang Province | Gyeongsan–Cheongdo | Choi Kyung-hwan | Grand National Party |
| North Gyeongsang Province | Goryeong–Seongju–Chilgok | Lee In-ki | Grand National Party |
| North Gyeongsang Province | Gunwi–Uiseong–Cheongsong | Kim Jae-won | Grand National Party |
| North Gyeongsang Province | Yeongyang–Yeongdeok–Bonghwa–Uljin | Kim Kwang-won | Grand National Party |
| South Gyeongsang Province | Changwon A | Kwon Kyung-seok | Grand National Party |
| South Gyeongsang Province | Changwon B | Kwon Young-ghil | Democratic Labor Party |
| South Gyeongsang Province | Masan A | Kim Jung-boo | Grand National Party |
| South Gyeongsang Province | Masan B | Ahn Hong-joon | Grand National Party |
| South Gyeongsang Province | Jinju A | Choi Gu-sik | Grand National Party |
| South Gyeongsang Province | Jinju B | Kim Jae-kyung | Grand National Party |
| South Gyeongsang Province | Jinhae | Kim Hak-song | Grand National Party |
| South Gyeongsang Province | Tongyeong–Goseong | Kim Myeong-ju | Grand National Party |
| South Gyeongsang Province | Sacheon | Lee Bang-ho | Grand National Party |
| South Gyeongsang Province | Gimhae A | Kim Maeng-gon | Uri Party |
| South Gyeongsang Province | Gimhae B | Choi Chul-kook | Uri 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 | Kim Yang-soo | Grand National Party |
| South Gyeongsang Province | Uiryeong–Haman–Hapcheon | Kim Yeong-deok | Grand National Party |
| South Gyeongsang Province | Namhae–Hadong | Park Hee-tae | Grand National Party |
| South Gyeongsang Province | Sancheong–Hamyang–Geochang | Lee Kang-too | Grand National Party |
| Jeju Province | Jeju City–Bukjeju A | Kang Chang-il | Uri Party |
| Jeju Province | Jeju City–Bukjeju B | Kim Woo-nam | Uri Party |
| Jeju Province | Seogwipo–Namjeju | Kim Jae-yun | Uri Party |
| National | Proportional representation | Jang Hyang-sook | Uri Party |
| National | Proportional representation | Hong Chang-sun | Uri Party |
| National | Proportional representation | Kim Myung-ja | Uri Party |
| National | Proportional representation | Kim Hyuk-kyu | Uri Party |
| National | Proportional representation | Lee Kyung-sook | Uri Party |
| National | Proportional representation | Park Chan-suk | Uri Party |
| National | Proportional representation | Hong Mi-young | Uri Party |
| National | Proportional representation | Cho Seong-tae | Uri Party |
| National | Proportional representation | Park Young-sun | Uri Party |
| National | Proportional representation | Chung Eui-yong | Uri Party |
| National | Proportional representation | Kim Hyun-mee | Uri Party |
| National | Proportional representation | Park Myung-kwang | Uri Party |
| National | Proportional representation | Kim Young-joo | Uri Party |
| National | Proportional representation | Cho Sung-rai | Uri Party |
| National | Proportional representation | Kang Hye-sook | Uri Party |
| National | Proportional representation | Chung Duck-koo | Uri Party |
| National | Proportional representation | Lee Eun-young | Uri Party |
| National | Proportional representation | Min Byung-doo | Uri Party |
| National | Proportional representation | Yoon Won-ho | Uri Party |
| National | Proportional representation | Park Hong-soo | Uri Party |
| National | Proportional representation | You Seung-hee | Uri Party |
| National | Proportional representation | Chang Bok-sim | Uri Party |
| National | Proportional representation | Kim Jae-hong | Uri Party |
| National | Proportional representation | Kim Ae-sil | Grand National Party |
| National | Proportional representation | Park Se-il | Grand National Party |
| National | Proportional representation | Park Chan-sook | Grand National Party |
| National | Proportional representation | Yun Kun-young | Grand National Party |
| National | Proportional representation | Song Young-sun | Grand National Party |
| National | Proportional representation | Hwang Jin-ha | Grand National Party |
| National | Proportional representation | Chun Yu-ok | Grand National Party |
| National | Proportional representation | Jung Hwa-won | Grand National Party |
| National | Proportional representation | Lee Kei-kyung | Grand National Party |
| National | Proportional representation | Bahk Jae-wan | Grand National Party |
| National | Proportional representation | Na Kyung-won | Grand National Party |
| National | Proportional representation | Lee Ju-ho | Grand National Party |
| National | Proportional representation | Kim Young-sook | Grand National Party |
| National | Proportional representation | Yoo Seong-min | Grand National Party |
| National | Proportional representation | Ko Kyung-hwa | Grand National Party |
| National | Proportional representation | Lee Koon-hyon | Grand National Party |
| National | Proportional representation | Chin Soo-hee | Grand National Party |
| National | Proportional representation | Bae-il-do | Grand National Party |
| National | Proportional representation | Ahn Myoung-ock | Grand National Party |
| National | Proportional representation | Suh Sang-kee | Grand National Party |
| National | Proportional representation | Park Soon-ja | Grand National Party |
| National | Proportional representation | Sim Sang-jeung | Democratic Labor Party |
| National | Proportional representation | Dan Byung-ho | Democratic Labor Party |
| National | Proportional representation | Lee Young-soon | Democratic Labor Party |
| National | Proportional representation | Chun Young-se | Democratic Labor Party |
| National | Proportional representation | Choi Soon-young | Democratic Labor Party |
| National | Proportional representation | Kang Ki-kab | Democratic Labor Party |
| National | Proportional representation | Hyun Ae-ja | Democratic Labor Party |
| National | Proportional representation | Roh Hoe-chan | Democratic Labor Party |
| National | Proportional representation | Sohn Bong-scuk | Millennium Democratic Party |
| National | Proportional representation | Kim Chong-in | Millennium Democratic Party |
| National | Proportional representation | Lee Seung-hee | Millennium Democratic Party |
| National | Proportional representation | Kim Hong-il | Millennium Democratic Party |

## Changes in membership

| Date | Constituency | Incumbent | Party | New member | Party | Party | Notes |
| 6 January 2005 | Proportional representation | Park Hong-soo | Uri | Suh Hae-suk | | Uri | Incumbent resigned on 6 January 2005 upon appointment as Minister of Agriculture; replaced by the next member in the Uri list. |
| 23 March 2005 | Proportional representation | Park Se-il | Grand National | Lee Sung-ku | | Grand National | Incumbent resigned on 23 March 2005; replaced by the next member in the Grand National list. |
| 30 April 2005 | Jungwon, Seongnam, Gyeonggi Province | Lee Sang-rak | Uri | Shin Sang-jin | | Grand National | Incumbent lost seat on 10 December 2004. New member by-elected. |
| 30 April 2005 | Pocheon–Yeoncheon, Gyeonggi Province | Lee Chul-woo | Uri | Ko Jeou-heung | | Grand National | Incumbent lost seat on 28 March 2005. New member by-elected. |
| 30 April 2005 | Gongju–Yeongi, South Chungcheong Province | Oh Si-duck | Uri | Chung Jin-suk | | Independent | Incumbent lost seat on 28 January 2005. New member by-elected. |
| 30 April 2005 | Asan, South Chungcheong Province | Bok Ki-wang | Uri | Lee Jin-koo | | Grand National | Incumbent lost seat on 10 March 2005. New member by-elected. |
| 30 April 2005 | Yeongcheon, North Gyeongsang Province | Lee Duk-mo | Grand National | Chung Hee-soo | | Grand National | Incumbent lost seat on 18 February 2005. New member by-elected. |
| 30 April 2005 | Gimhae A, South Gyeongsang Province | Kim Maeng-gon | Uri | Kim Chung-kwon | | Grand National | Incumbent lost seat on 27 March 2005. New member by-elected. |
| 13 October 2005 | Proportional representation | Yoo Seong-min | Grand National | Moon Hee | | Grand National | Incumbent resigned on 13 October 2005 to run in the 2005 Dong B, Daegu by-election; replaced by the next member in the Grand National list. |
| 26 October 2005 | Dong B, Daegu | Park Chang-dal | Grand National | Yoo Seong-min | | Grand National | Incumbent's election invalidated on 15 September 2005. New member by-elected. |
| 26 October 2005 | Buk, Ulsan | Cho seung-soo | Democratic Labor | Yoon Doo-hwan | | Grand National | Incumbent lost seat on 29 September 2005. New member by-elected. |
| 26 October 2005 | Wonmi A, Bucheon, Gyeonggi Province | Kim Ki-suk | Uri | Lim Hae-kyu | | Grand National | Incumbent lost seat on 24 May 2005. New member by-elected. |
| 26 October 2005 | Gwangju, Gyeonggi Province | Park Hyuk-kyu | Grand National | Chung Chin-sup | | Grand National | Incumbent lost seat on 9 September 2005. New member by-elected. |
| 26 July 2006 | Seongbuk B, Seoul | Shin Geh-ryoon | Uri | Chough Soon-hyung | | Democratic | Incumbent lost seat on 10 February 2006. New member by-elected. |
| 26 July 2006 | Songpa A, Seoul | Maeng Hyung-kyu | Grand National | Maeng Hyung-kyu | | Grand National | Incumbent resigned on 31 January 2006 to run in the 2006 Seoul mayoral election; re-elected in the by-election. |
| 26 July 2006 | Sosa, Bucheon, Gyeonggi Province | Kim Moon-soo | Grand National | Cha Myong-jin | | Grand National | Incumbent resigned on 31 January 2006 to run in the 2006 Gyeonggi Province gubernatorial election. New member by-elected. |
| 26 July 2006 | Masan A, South Gyeongsang Province | Kim Jung-boo | Grand National | Lee Ju-young | | Grand National | Incumbent lost seat on 12 May 2006. New member by-elected. |
| 28 September 2006 | Proportional representation | Kim Hong-il | Democratic | Kim Song-ja | | Democratic | Incumbent lost seat on 28 September 2006; replaced by the next member in the Democratic list. |
| 25 October 2006 | Namdong B, Incheon | Lee Ho-woong | Uri | Lee Weon-bok | | Grand National | Incumbent lost seat on 14 September 2006. New member by-elected. |
| 25 October 2006 | Haenam–Jindo, South Jeolla Province | Lee Jung-il | Democratic | Chae Il-byung | | Democratic | Incumbent lost seat on 25 August 2006. New member by-elected. |
| 1 February 2007 | Proportional representation | Chung Duck-koo | Uri | Shin Myoung | | Uri | Incumbent lost seat on 1 February 2007; replaced by the next member in the Uri list. |
| 25 April 2007 | Seo B, Daejeon | Ku Non-hoe | Uri | Sim Dae-pyung | | Uri | Incumbent died on 5 November 2006. New member by-elected. |
| 25 April 2007 | Hwaseong, Gyeonggi Province | Ahn Byong-yub | Uri | Ko Hee-sun | | Grand National | Incumbent's election invalidated on 10 November 2006. New member by-elected. |
| 25 April 2007 | Muan–Sinan, South Jeolla Province | Hahn Hwa-kap | Democratic | Kim Hong-up | | Democratic | Incumbent lost seat on 22 December 2006. New member by-elected. |
| 15 October 2007 | Proportional representation | Kim Hyuk-kyu | GUDNP (elected as Uri) | Kim Young-dae | | GUDNP (from Uri list) | Incumbent lost seat on 15 October 2007; replaced by the next member in the Uri list. |
| 13 December 2007 | Busanjin A, Busan | Kim Byung-ho | Independent (elected as Grand National) | Seat remained vacant | Seat remained vacant | Seat remained vacant | Incumbent lost seat on 13 December 2007. No by-election held. |
| 14 February 2008 | Proportional representation | Sim Sang-jeung | Democratic Labor | Seat remained vacant | Seat remained vacant | Seat remained vacant | Incumbent lost seat on 14 February 2008. |
| 14 February 2008 | Proportional representation | Roh Hoe-chan | Democratic Labor | Seat remained vacant | Seat remained vacant | Seat remained vacant | Incumbent lost seat on 14 February 2008. |
| 20 February 2008 | Proportional representation | Dan Byung-ho | Democratic Labor | Seat remained vacant | Seat remained vacant | Seat remained vacant | Incumbent lost seat on 20 February 2008. |