Renzo Merlin (27 September 1923 – 5 November 2003) was an Italian professional football player. He played for 5 seasons (108 games, 32 goals) in the Serie A for Salernitana Calcio 1919, A.S. Lucchese Libertas 1905 and A.S. Roma. Merlin died in November 2003 at the age of 80.