
The 53rd FIFA Congress was held in May 2002 in Seoul, South Korea before the 2002 FIFA World Cup. It was the annual meeting of the international governing body of association football FIFA. The congress saw the re-election of Joseph "Sepp" Blatter as the President of FIFA.

The 1992 World Junior Championships in Athletics was the fourth edition of the international athletics competition for athletes aged 19 years or under. It was held in Seoul, South Korea from September 16 to September 20, 1992.

The Daemyung Killer Whales are a professional ice hockey team based in Seoul, South Korea. The club joined the Asia League Ice Hockey in the 2016–17 season.

The Doosan Bears are a professional baseball team of the KBO League and are based in Seoul, South Korea. They have won six Korean Series titles and play their home games at Seoul's Jamsil Baseball Stadium; sharing the stadium with their rivals, the LG Twins.

Doosan Handball Club is a handball club based in South Gyeongsang Province, South Korea. Founded in 1991, they compete in the Handball Korea League and are one of its most successful clubs, having won the competition nine times.

GS Caltex Seoul KIXX is a South Korean women's volleyball team. The team is based in Seoul and plays in the V-League. It is currently owned by GS Sports and the main sponsor is GS Caltex, a subsidiary of GS Group. The club was founded in 1970 as Honam Petrochemical Volleyball Team.

The JoongAng Seoul Marathon is an annual footrace that takes place in Seoul, South Korea, usually in early November. First held in 1999, the race was established as a commemoration of Olympic marathon race which was held as part of the 1988 Seoul Olympics. It features a men's marathon elite race, and also has non-professional races of 10 km as well as the marathon distance. Elite international competitors are usually not invited to the women's race, thus that section tends to be a competition between Korean women only.

K-1 World Grand Prix 2008 in Seoul Final 16 was a martial arts event held by the K-1 on Saturday September 27, 2008 at the Olympic Gymnastics Arena in Seoul, Korea. It was the Final Elimination tournament for top sixteen fighters. The winners qualified for the K-1 World GP 2008 Final held on December 6, 2008 at Yokohama Arena, Japan.
K-1 World Grand Prix 2009 in Seoul Final 16 was a martial arts event held by the K-1 on Saturday, September 26, 2009 at the Olympic Gymnastics Arena in Seoul, Korea. It will be the Final Elimination tournament for top sixteen fighters. The winners will qualify for the K-1 World Grand Prix 2009 Final held on December 5, 2009 at Yokohama Arena, Japan.

K-1 World Grand Prix 2010 in Seoul Final 16 was a martial arts event held by the K-1 on Saturday, October 2, 2010 at the Olympic Gymnastics Arena in Seoul, Korea. It was the Final Elimination tournament for top sixteen fighters. The winners have qualified for the K-1 World Grand Prix 2010 Final held on December 11, 2010 at Yokohama Arena, Japan.

Kiwoom Heroes is a South Korean professional baseball team based in Seoul. They are a member of the KBO League. The Heroes mascot is Teokdori. Like other baseball teams in South Korea, the team is known primarily by the name of the sponsor, occasionally as their nickname, and never as the city in which they are based. The Heroes play their home games at Gocheok Sky Dome in Gocheok-dong, a neighborhood located in the southwestern part of Seoul.

LG Twins is a South Korean professional baseball team based in Seoul, South Korea. They are a member of the KBO League. The Twins play their home games at Jamsil Baseball Stadium, which they share with their rival, the Doosan Bears; the stadium is known as "Two families under one roof."

The Samsung Securities Cup was a professional tennis tournament played on outdoor hard courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour and the ITF Women's Circuit. The men's event was held annually in Seoul, South Korea, from 2000 to 2013, the women's event parallel from 2011 to 2013.

FC Seoul is a South Korean professional football club based in Seoul, the capital of South Korea, that competes in the K League 1, the top flight of South Korean football. The club is owned by GS Sports, a subsidiary of GS Group.

Seoul FC Martyrs was a South Korean football club based in the Gangbuk-gu district of Seoul.

The Seoul International Marathon, also known as the Dong-A Ilbo Seoul Marathon or Seoul Marathon is an annual marathon race that takes place in Seoul, South Korea. It is one of two annual races over the 42.195 km classic distance in the city, alongside the JoongAng Seoul Marathon which is held in November. It holds World Athletics Platinum Label Road Race status. First held in 1931, it is the third longest-running road running competition in Asia after the Hakone Ekiden and Chugoku Yamaguchi Ekiden in Japan.

Seoul Nowon United FC is a South Korean semi-professional football club based in Nowon District, Seoul. It currently competes in the fourth tier of the South Korean football league system, the K4 League. Until 2018, the club was named Seoul United FC.

Seoul Pabal FC was a South Korean soccer club based in Eunpyeong-gu, Seoul. It was a member of the K3 League, an amateur league and the third tier of league football in South Korea.

Seoul Samsung Thunders have been in the KBL since its inception 24 years ago. The Seoul Samsung Thunders received their name from Samsung Electronics. Originally based in Suwon, they are now located in the heart of South Korea's capital, Seoul, and play at Jamsil Arena.

The Seoul SK Knights is a professional basketball club in the Korean Basketball League. Founded in 1997 as Cheongju SK Knights, the club currently plays in the Korean Basketball League (KBL). The club is owned and sponsored by SK Telecom.

Seoul Women's Football Club is a South Korean women's football club based in Seoul.

Seoul Woori Card Wibee is a South Korean professional volleyball team founded in 2008. They are based in Seoul and are members of the Korea Volleyball Federation (KOVO). Their home arena is Jangchung Gymnasium.

SK Sugar Gliders is a South Korean women's handball club based in Gwangmyeong. The club was established in 2012.

The 2004 World Single Distance Speed Skating Championships were held between 12 and 14 March 2004 in the Taereung Indoor Ice Rink, Seoul, South Korea.