Infobox last updated on: May 4, 2009.

Gisela Dulko (born on 30 January, 1985 in Tigre, Buenos Aires Province, Argentina) is an Argentine female tennis player. On November 21, 2005 Dulko reached her career-high singles ranking of World No. 26. She has previously dated Spanish tennis player Fernando Verdasco.

As a Junior, she won three of the four Grand Slam events in doubles, including the 2000 US Open with María Emilia Salerni, the 2002 Australian Open with Angelique Widjaja, and the 2001 Wimbledon Championships with Ashley Harkleroad. As a professional, she has won seven doubles championships.