Tomás Martín Etcheverry (born 18 July 1999) is an Argentine professional tennis player. He has a career high ATP singles ranking of world No. 27, achieved on 12 February 2024. He also has a career-high ATP doubles ranking of world No. 205, achieved on 19 September 2022. He is the current Argentinian No. 3 in singles.

Etcheverry has captured three ATP Challenger and five ITF titles in singles as well as six ITF and one ATP Challenger title in doubles.