Swimming at the 2017 Summer Universiade – Men's 50 metre butterfly

The Men's 50 metre butterfly competition at the 2017 Summer Universiade was held on 20 and 21 August 2017.

Records
Prior to the competition, the existing world and Universiade records were as follows.

The following new records were set during this competition.

Heats
The heats were held on 20 August at 11:01.

Semifinals
The semifinals were held on 20 August at 20:02.

Final
The final was held on 21 August at 19:02.