Isabelle Haverlag (born 4 March 2001) is a Dutch tennis player.

[1] Haverlag has a career-high doubles ranking by the WTA of 121, achieved on 16 December 2024.

[2] To date, she has won 13 doubles titles on the ITF Women's World Tennis Tour.

[3] She won her first big title at the 2022 Open de Seine-et-Marne, in the doubles draw, partnering Justina Mikulskytė.

This biographical article relating to Dutch tennis is a stub.