Results for Guyana in 400 metres, Men

Olympic and Intercalated results only.

Games	Athlete/Team	Placement
1960 Summer Olympics	Clayton Glasgow	5 h5 r1/4
1996 Summer Olympics	Richard Jones	6 h4 r1/4
2012 Summer Olympics	Winston George	5 h6 r1/3
2016 Summer Olympics	Winston George	5 h6 r1/3