Jan Šefl (born 10 May 1990) is a Czech swimmer.
He competed in the men's 50 metre butterfly event at the 2017 World Aquatics Championships.
[1][2] He represented the Czech Republic in men's 100 metre butterfly event at the 2020 Summer Olympic Games in Tokyo.
[3][4] He holds the men's Czech national record in the event.
This biographical article related to a Czech swimmer is a stub.