Thailand competed at the 2000 Summer Olympics in Sydney, Australia.

Men's 4 × 100 m Men's 4 × 400 m Women's 100m Hurdles Women's 4 × 100 m Men Women Mixed Men's Mistral Women's Mistral Open Laser Men's 200m Freestyle Men's 400m Freestyle Men's 1500m Freestyle Men's 200m Butterfly Men's 200m Breaststroke Men's 100m Backstroke Men's 200m Backstroke Men's 200m Individual Medley Men's 400m Individual Medley Women's 50m Freestyle Women's 100m Freestyle Women's 200m Freestyle Women's 400m Freestyle Women's 100m Butterfly Women's 100m Backstroke Women's 200m Backstroke Men Women Men Women