Jan Choinski (Polish: Choiński; born 10 June 1996 in Germany) is a German-born Polish-British tennis player who competes mainly on the ATP Challenger Tour.

[1] He won his maiden Challenger title defeating Juan Pablo Varillas, moving more than a 150 positions back up close to the top 300 at No.

Choinski was awarded a wildcard for his Grand Slam main draw debut at the 2023 Wimbledon Championships where he won his first Major match against Dusan Lajovic[3][4] before losing in the second round to 17th seed Hubert Hurkacz.

280, he qualified for the main draw of the 2024 US Open after saving three match points against American Maxime Cressy to make his debut at this Major.

[13] Following lifting the trophy at the Tulln Challenger, he returned to the top 200 in the ATP rankings, moving 100 positions up, on 9 September 2024.

In September, Choinski won his third career Challenger title at the 2024 NÖ Open in Tulln, Austria, defeating Lukas Neumayer in the final.