Thailand Swimming Association
The Thailand Swimming Association is the national governing body for Aquatic sports include, Diving, Marathon swimming, Masters swimming, Swimming, Synchronized swimming, Water polo. It is accredited by the International Swimming Federation which is the governing body for the sport of Swimming in the world, and the National Olympic Committee of Thailand. It founded on 24 June 1959.
The association is headquartered in Bang Kapi, Bangkok. The current head of the federation is Gen. Prawit Wongsuwan.
Championships
Thailand Swimming Association organises championships every year in each of the sporting disciplines.Swimming
;Long course| Year | Dates | Venue | Notes |
| 2017 | 1–5 April | Thammasat University Aquatics Centre, Pathum Thani | World Championships Trials |
| 2018 | 7–11 April | Assumption University Aquatics Centre, Samut Prakan | World Championships Trials |
| 2019 | 5-10 April | Assumption University Aquatics Centre, Samut Prakan | World Championships Trials |
;Short course
| Year | Dates | Venue | Notes |
| 2016 | 1–3 October | Assumption University Aquatics Centre, Samut Prakan | World Championships Trials |