South Korea competed as Korea at the 2004 Summer Olympics, while North Korea competed as DPR Korea.

Both North Korea and South Korea marched together in the Parade of Nations at the Opening and Closing Ceremonies under the Unification Flag, a white flag showing the united Korean Peninsula in blue. They had two flagbearers carrying the flag together at each occasion, one representing the North and the other representing the South. The female athletes and staff wore red blazers, while their male counterparts wore blue. Although they marched together, the teams competed separately and had separate medal tallies.

Medals

	Gold	Silver	Bronze	Total
Korea	9	12	9	30

Results by event

Archery

Men's individual:

• Park Kyung-mo - 5th place; Olympic record, 70 m 18-arrow round with 173 points
• Im Dong-hyun - 6th place; world record, 70 m 72-arrow round with 687 points
• Jang Yong-ho - 11th place

Women's individual:

• Park Sung Hyun - gold medal; world record, 70 m 72-arrow round with 682 points
• Lee Sung Jin - silver medal
• Yun Mi Jin - 5th place; Olympic record, 70 m 18-arrow round with 173 points

Men's team:

• Im Dong-hyun, Jang Yong-ho, Park Kyung-mo - gold medal

Women's team:

• Park Sung Hyun, Lee Sung Jin, Yun Mi Jin - gold medal

Athletics

Men's 110 metre hurdles:

• Park Tae-kyong - Round 1: 13.96 s

Men's 800 metres:

• Lee Jae-hoon - Round 1: 1:46.2 (did not advance)

Men's marathon:

• Lee Bong-ju - 2:15:33 (14th place)
• Ji Young-joon - 2:16:14 (17th place)
• Lee Myong-seun - 2:21:01 (41st place)

Women's marathon:

• Lee Eun-Jung - 2:37:23 (19th place)
• Chung Yun-Hee - 2:38:57 (23rd place)
• Choi Kyung-Hee - 2:44:05 (35th place)

Men's 20 km walk:

• Shin Il-yong - 1:28:02 (29th place)
• Lee Dae-ro - 1:28:59 (33rd place)
• Park Chil-sung - 1:32:41 (41st place)

Women's 20 km walk:

• Kim Mi-Jeong - DQ

Men's 50 km walk:

• Kim Dong-young - 4:05:16 (27th place)

Men's triple jump:

• Park Hyung-jun - Round 1, 15.84 metres (did not advance)

Men's pole vault:

• Kim Yoo-suk - Round 1, 5.30 metres (did not advance)

Women's shot put:

• Lee Mi Young - Round 1: 16.35 metres

Men's javelin:

• Park Jae-myong - Round 1, 72.70 metres (did not advance)

Women's javelin:

• Jung Yeon Chang - Round 1: 53.93 metres

Badminton

Men's singles:

• Shon Seung-mo - silver medal
• Park Tae-sang - defeated in quarterfinals
• Lee Hyun-il - defeated in round of 16

Women's singles:

• Jun Jae-youn - defeated in round of 16
• Seo Yoon-hee - defeated in round of 16

Men's doubles:

• Kim Dong-moon and Ha Tae-kwon - gold medal
• Lee Dong-soo and Yoo Yong-sung - silver medal
• Yim Bang-eun and Kim Yong-hyun - defeated in quarterfinals

Women's doubles:

• Ra Kyung-min and Lee Kyung-won - bronze medal
• Lee Hyo-jung and Hwang Yu-mi - defeated in quarterfinals

Mixed doubles:

• Kim Dong-moon & Ra Kyung-min - defeated in quarterfinals
• Kim Yong-hyun and Lee Hyo-jung - defeated in round of 16

Basketball

Women's: 12th place

• Preliminary round: 0-5
• Classification (11/12): lost to Nigeria, 68-64

Boxing

South Korea sent seven boxers to Athens. They returned with two bronze medals, putting them in a four-way tie for 12th place in the boxing medal count. Three lost their round of 32 bouts, while the other four all won in the round of 16 to advance to the quarterfinals. Two more fell there, with the remaining two losing in the semifinals to finish with bronze medals. The combine record of the Korean team was 9-7.

Light Flyweight (48kg)

• Hong Moo-Won
  1. Round of 32 - Defeated Lalaina Rabenarivo of Madagascar, outscored
  2. Round of 16 - Defeated Harry Tanamor of Philippines, 42-25
  3. Quarterfinal - Lost to Yan Bhartelemy Varela of Cuba, 30-11

Flyweight (51kg)

• Kim Kim-suk
  1. Round of 32 - Lost to Somjit Jongjohor of Thailand, 22-12

Bantamweight (54kg)

• Kim Won Il
  1. Round of 32 - Lost to Worapoj Petchkoom of Thailand, outscored

Featherweight (57kg)

• Seok Hwan Jo - bronze medal
  1. Round of 32 - Defeated Sedat Tasci of Turkey, 37-28
  2. Round of 16 - Defeated Benoit Gaudet of Canada, 28-16
  3. Quarterfinal - Defeated Viorel Simion of Romania, 39-35
  4. Semifinal - Lost to Alexei Tichtchenko of Russia, 45-25

Lightweight (60kg)

• Jong Sub Baik
  1. Round of 32 - Defeated Gyula Kate of Hungary, 30-23
  2. Round of 16 - Defeated Munkh Erdene U. of Mongolia, 33-22
  3. Quarterfinal - Lost to Amir Khan of Great Britain, stopped contest

Welterweight (69kg)

• Kim Jung Joo - bronze medal
  1. Round of 32 - Bye
  2. Round of 16 - Defeated Vitalie Grusac of Moldova, 23-20
  3. Quarterfinal - Defeated Juan Camilo Novoa Aguinaga of Colombia, 25-23
  4. Semifinal - Lost to Lorenzo Aragon Armenteros of Cuba, 38-10

Light Heavyweight (81kg)

• Song Hak Sung
  1. Round of 32 - Lost to Abdelhani Kensi of Algeria, 25-19

Fencing

Men's épée individual:

• Lee Sang-yup - defeated in round of 16

Women's épée individual:

• Kim Hee-Jeong - defeated in quarterfinals
• Kim Mi-jung - defeated in round of 32
• Lee Keum-Nam - defeated in round of 32

Men's foil individual:

• Ha Chang-Duk - defeated in round of 16
• Choi Byung-chul - defeated in round of 16
• Park Hee-kyung - defeated in round of 16

Women's foil individual:

• Nam Hyun-hee - defeated in quarterfinals

Men's sabre individual:

• Oh Eun-seok - defeated in round of 32

Women's sabre individual:

• Lee Shin-mi - defeated in round of 32

Women's épée team:

• Kim Hee-Jeong, Go Jung-Nam , and Lee Keum-Nam - 7th place

Men's foil team:

• Choi Byung-chul, Ha Chang-Duk, and Kim Woon-sung - 7th place

Football (Soccer)

Men's: 6th place

• Preliminary round: 1-2-0
• Quarterfinal: lost to Paraguay, 3-2

Handball

Men's: 8th place

• Preliminary round: 2-0-3
• Quarterfinal: lost to Hungary, 30-25
• Classification (5-8): lost to Greece, 29-24
• Classification (7/8): lost to Spain, 31-24

Women's: silver medal

• Preliminary round: 3-1-0
• Quarterfinal: defeated Brazil, 26-24
• Semifinal: defeated France, 32-31
• Gold medal match: lost to Denmark, 38-36

Hockey

Men's: 8th place

• Preliminary round: 2-2-1
• Classification (5-8): lost to New Zealand, 4-3
• Classification (7/8): lost to India, 5-2

Women's: 7th place

• Preliminary round: 1-1-2
• Classification (5-8): lost to New Zealand, 3-2
• Classification (7/8): defeated Japan, 3-1

Modern Pentathlon

Men's

• Han Do-Ryung - 4936 (24th place)
• Lee Choon-Huan - 5068 (21st place)

Tennis

Men's singles:

• Lee Hyung-Taik - defeated in Round of 32 to Fernando González

Women's singles:

• Cho Yoon-Jeong - defeated in Round of 32 to Francesca Schiavone

Volleyball

Women's:

• Prelims: 3-2
• Quarterfinal: Defeated 3-0 by Russia

Officials

• President: Lee Yun-taek
• Secretary General: Park Yang-Chun