Santiago Ventura Bertomeu (; born 5 January 1980) is a retired tennis player from Spain. He was born in Castellón, Spain and lives in Burriana, Spain. He is a clay court specialist and is known for the considerable use of drop shots during his matches.
Ventura reached a career-high singles ranking of world No. 65 on 3 March 2008. He reached a career-high doubles ranking of world No. 37 on 7 July 2008.
He was the first player to be beaten by Andy Murray on the ATP Tour, in the first round of the Aegon Championships tournament in 2005.