Marco Croatti (born 17 September 1972) is an Italian politician serving as a member of the Senate since 2018. He has served as secretary of the Senate since 2022. He represents the Five Star Movement, of which he is regional coordinator in Emilia-Romagna together with .
On 1 October 2025, he was detained by Israel alongside three other Italian lawmakers while participating in the Global Sumud Flotilla which aimed to carry aid to the Gaza Strip; the group subsequently filed a criminal complaint with the Public Prosecutor's Office in Rome.