Ylena In-Albon (born 6 March 1999) is a Swiss tennis player.

In-Albon made her main-draw debut on the WTA Tour at the 2017 Ladies Open Biel Bienne in the doubles draw, partnering fellow Swiss player Leonie Küng.

[2] She made her Grand Slam main-draw debut as a direct entry at the 2022 Wimbledon Championships, replacing Sofia Kenin.

[5] As a qualifier, In-Albon reached her first WTA 125 final at the 2024 MundoTenis Open, defeating top seed María Lourdes Carlé in the semifinals,[6] before losing the championship match to seventh seed Maja Chwalińska in straight sets.

[7][8] Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup, and Olympic Games are included in win–loss records.