Taddei is an Italian surname. Notable people with the surname include:

• Alessandro De Taddei (born 1971), Italian speed skater

• Claudio Taddei (1966–2019), Uruguayan-Swiss singer-songwriter and painter

• Frédéric Taddeï (born 1961), French journalist and television and radio host

• Giuseppe Taddei (1916–2010), Italian baritone

• Marc Taddei, conductor based in New Zealand

• Marco Taddei Né (born 1983), Ivorian football midfielder

• Mario Taddei (born 1972), Italian historian of science

• Max Taddei (born 1991), Italian professional footballer

• Nazareno Taddei (1920–2006), Italian Jesuit priest, linguist, author and film critic, after whom the Nazareno Taddei Award of the Venice International Film Festival is named

• Paolino Taddei (1860–1925), Italian politician

• Patrizia Taddei (born 1948), Sammarinese artist

• Phillip Taddei (born 1975), American professor

• Pier Paolo Taddei (born 1949), Sammarinese sports shooter

• Riccardo Taddei (born 1980), Italian association footballer

• Rodrigo Taddei (born 1980), Brazilian footballer

• Rosa Taddei (1799–1869), Italian actress and poet

• Rossana Taddei (born 1969), Uruguayan singer and composer

• Samuele Taddei (born 2003). Italian rugby player

• Taddeo Taddei (1470–1528), Florentine humanist and patron, after whom the Taddei Tondo is named

• Valdir Antônio Taddei (died 2004), Brazilian zoologist and expert on Neotropical bats

See also

• Taddei Tondo, a relief sculpture by Michelangelo