Thibault Lassalle (born 22 August 1987) is a French former professional rugby union player. He played as a lock for Agen, Oyonnax, Toulon, and Castres.
Lassalle's father is French politician Jean Lassalle who has been a member of the National Assembly for the Pyrénées-Atlantiques' 4th constituency since 2002 and was a candidate for the 2017 French presidential election.