Gastón Etlis (born 4 November 1974) is a former tennis player from Argentina.
The right-hander won four career titles in doubles, and reached his highest ATP rankings of World No.
114 in singles May 2000 and World No.
17 in doubles in January 2005.
Etlis' greatest success in singles came in the final tournament of his singles career, reaching the semifinals of Costa do Sauípe in 2003.