Nicoletta Grisoni, longer name Nicole Fernande Grisoni-Chappuis, better known by her mononym Nicoletta (born 11 April 1944 in Vongy, now merged into Thonon-les-Bains, Haute-Savoie, France) is a French pop singer. Becoming very popular on French radio and television, where she had a number of hits in the 1960s and the 1970s, she was considered part of what is known as the French yé-yé generation heavily influenced by American music, particularly rhythm and blues, rock and roll and Beat music.

She is mostly known for her version of "Mamy Blue". Nicoletta Grisoni was reportedly born to a mentally retarded woman who became pregnant as a result of rape. She reportedly chose the song "Mamy Blue" as a tribute to her mother.