| Woon Sui Kut 温瑞吉 | |
| Birth Date: | 31 May 1929 |
| Death Place: | Singapore |
| Occupation: | Sports Official (Swimming) |
| Years Active: | 1964 - 2013 |
| Awards: | 1998: Trophy for Sports Ethics, International Olympic Committee |
Woon Sui Kut (Simplified Chinese: 温瑞吉; Pinyin: Wēn Ruì Jí) was one of Singapore's longest-serving veteran swimming officials and a known figure in the international sporting arena. He was formerly a teacher at Victoria School.
Woon had officiated in numerous swimming events, including 10 Olympics swimming events in his lifetime. Woon served as the Secretary-General of the Singapore Swimming Association from 1964 - 1999, and as Vice-President of the Asian Swimming Federation (AASF), and a member of the international swimming body, Fédération Internationale de Natation['' ([[FINA]]).[1] He was also known in the local swimming fraternity as "the Father of Swimming, Technical Officiating, Life Saving, Diving and Water Polo"[2]
He was removed as an official from the 2004 Summer Olympics after signing off on a judge's report that failed to provide a reason for the disqualification of Aaron Peirsol in the 200 metre backstroke final.[3]
Woon died at Changi General Hospital on 21 December 2013, at 4.34pm. He had died from complications after a fall at home a day before, and four days after returning from his officiating work at the 2013 Southeast Asian Games in Myanmar.