Ave Maria Ninchi (14 December 1914 – 10 November 1997) was an Italian supporting actress who played character roles on stage, television, and in over 98 feature films that included Tomorrow Is Too Late (1949) and Louis Malle's Murmur of the Heart (1971) and Lacombe Lucien (1974).

Ninchi has worked with some of Italy's top movie stars, including Sophia Loren, Anna Magnani, Marcello Mastroianni, Alberto Sordi, and Gina Lollobrigida; her performances playing in duo with Aldo Fabrizi and Totò are particularly memorable. Her television career was at its peak during the 1960s and 1970s when she was appearing in some of Italy's top-rated series.