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.
[1] 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.
Qualification: First four of each heat (Q) and the next two fastest (q) qualified for the semifinals.
Qualification: First 4 of each heat (Q) and the next 1 fastest (q) qualified for the final.