2014 European Athletics Championships – Men's 400 metres

The men's 400 metres at the 2014 European Athletics Championships took place at the Letzigrund on 12, 13, and 15 August.

The winning margin was 0.04 seconds, which was also the winning margin in the men's 400 metres at the 1971, 1978 and 1986 editions of these championships. As of 2024, 0.04 seconds remains the narrowest winning margin for this event at these championships.

Schedule
All times are local times (UTC+2)

Round 1
First 4 in each heat (Q) and 4 best performers (q) advance to the Semifinals.

Semifinal
First 2 in each heat (Q) and 2 best performers (q) advance to the Final.