Giacomo Tomaselli (born 25 July 1999) is an Italian professional footballer who plays as a winger for club Latina.
On 24 January 2018, Tomaselli joined Serie C club Monza from Borgosesia. On 9 July 2019, he moved to Gozzano on loan. On 11 August 2020, AlbinoLeffe announced the signing of Tomaselli on a permanent deal.
On 30 January 2023, Tomaselli signed with Entella.