Marius Mihai Lăcătuș (; born 5 April 1964) is a Romanian football coach and former professional footballer. He is by far the most successful footballer ever to play for Steaua București and was part of their European Cup victory in 1986. Lăcătuș is the all-time top scorer for Steaua with 16 goals in European competitions. On 7 July 2021, Steaua retired his shirt number 7 at the inauguration match of the new Steaua Stadium.