Grégory Sertić (born 5 August 1989 in Brétigny-sur-Orge, Essonne) is a former French football player of Croatian descent who most recently played for Marseille.
He is a French under-21 international having played with the team at the 2009 Toulon Tournament. In March 2013, Sertić has been granted a Croatian citizenship, however FIFA does not allow Sertić to play for Croatian national team due to the new rules about naturalization of players.