Athletics at the 1990 Commonwealth Games – Men's 800 metres

The men's 800 metres event at the 1990 Commonwealth Games was held at the Mount Smart Stadium in Auckland on 29 January and 1 February 1990.

The winning margin was 0.02 seconds which as of 2024 remains the only time the men's 800 metres was won by less than 0.05 seconds at these games.

Heats
Qualification: First four of each heat (Q) and the next two fastest (q) qualified for the semifinals.

Semifinals
Qualification: First 4 of each heat (Q) and the next 1 fastest (q) qualified for the final.