2023 European Athletics U23 Championships – Men's 800 metres

The Men's 800 metres event at the 2023 European Athletics U23 Championships was held in Espoo, Finland, at Leppävaara Stadium on 14 and 16 July.

Records
Prior to the competition, the records were as follows:

Round 1
Qualification rules: First 3 in each heat (Q) and the next 2 fastest (q) will qualify for the final.