Giacometti is an Italian language surname derived from the name Giacomo.

The surname may refer to:

Alberto Giacometti (1901–1966), a Swiss sculptor, painter, draughtsman, and printmaker Augusto Giacometti (1877–1947), a Swiss painter; 2nd cousin of Giovanni Giacometti Bruno Giacometti (1907–2012), a Swiss architect; the brother of Alberto and Diego Giacometti Diego Giacometti (1902–1985), a Swiss sculptor and designer, the younger brother of Alberto Giacometti Giovanni Giacometti (1868–1933), a Swiss painter; the father of Alberto, Diego, and Bruno Giacometti John Giacometti (1936–2006), an Italian-Australian association football player Michel Giacometti (1929–1990), a French ethnomusicologist Paolo Giacometti (1816–1882), an Italian dramatist Roney "Giah" Giacometti (born 1974), a Brazilian composer, singer and guitarist Zaccaria Giacometti (1893–1970), a Swiss professor of constitutional law; the cousin of Alberto, Diego and Bruno Giacometti