Gisela Dulko (born January 30, 1985, Buenos Aires, Argentina) is an Argentine female tennis player. On June 20, 2005 Dulko reached her career-high singles ranking: World No. 29.

She has yet to win a singles title in her career but she has won 1 title in doubles. She was a singles finalist in Hobart in 2005 (lost to Chinese Zheng Jie).