Leonardo Gassman, better known as Leo Gassmann (born 22 November 1998) is an Italian singer and songwriter.
Born in Rome, he is the son of the actors Alessandro Gassmann and Sabrina Knaflitz and the grandson of the actors Vittorio Gassman and Juliette Mayniel.
In 2018 he participated at the twelfth edition of the Italian X Factor; he ended up fifth and released his debut single "Piume".
Gassmann competed and won at the "Newcomers" section of the Sanremo Music Festival 2020 with the song "Vai bene così". His first studio album Strike was released on 7 February 2020.