Giacomo Possamai (born 9 February 1990) is an Italian politician.

A member of the Democratic Party, he serves as Mayor of Vicenza since 2023.

Between October and November 2012, Possamai participated in Barack Obama's electoral campaign within the Philadelphia Electoral Committee, with communication and data management roles.

[1] On 14 January 2023, Possamai announced his candidacy for Mayor of Vicenza in view of the 2023 administrative elections.

In the first round he stands at 46.23% over the outgoing mayor Francesco Rucco, still at 44.06%; in the ballot he will then be the winner with 50.54% of the votes.