Puerto Rico competed at the 1968 Summer Olympics in Mexico City, Mexico.

58 competitors, 54 men and 4 women, took part in 54 events in 10 sports.

[2] Men's 100 metres Men's 800 metres Men's 1500 metres Men's 110 metres hurdles Men's 4x100 metres relay Men's triple jump Men's team competition Flyweight (51 kg) Bantamweight (54 kg) Featherweight (57 kg) Lightweight (60 kg) Light welterweight (63.5 kg) Middleweight (75 kg) Light heavyweight (81 kg) 1000 metres time trial Sprint Individual pursuit Men's 3 metre springboard Men's 10 metre platform One fencer represented Puerto Rico in 1968.

Flying Dutchman class Star class 5.5 metre class Nine shooters, all male, represented Puerto Rico in 1968.

Men's 100 metres freestyle Women's 100 metres freestyle Men's 200 metres freestyle Women's 200 metres freestyle Men's 400 metres freestyle Women's 400 metres freestyle Women's 800 metres freestyle Men's 1500 metres freestyle Women's 100 metres breaststroke Women's 200 metres breaststroke Men's 100 metres backstroke Men's 200 metres backstroke Men's 100 metres butterfly Women's 100 metres butterfly Men's 200 metres butterfly Women's 200 metres butterfly Men's 200 metres individual medley Women's 200 metres individual medley Men's 400 metres individual medley Women's 400 metres individual medley Men's 4x100 metres freestyle relay Men's 4x200 metres freestyle relay Men's 4x100 metres medley relay Women's 4x100 metres medley relay Men's singles Men's doubles Featherweight Bantamweight Light heavyweight Middle heavyweight