Teresa Mattei, also known as Teresita (1 February 1921 - 12 March 2013) was an Italian partisan and politician.
Born in Genoa, Mattei in 1938, Mattei was expelled from all schools of the Regno d'Italia for openly criticizing in her classroom the Racial laws. Graduating in philosophy at the University of Florence in 1944, she was a partisan with the nom de guerre "Partigiana Chicchi". She took part at the killing of philosopher and Fascist minister Giovanni Gentile.
After the war, Mattei was a candidate for the Communist Party to the Constituent Assembly, in which she served as a secretary Bureau. Mattei was the youngest elected to the Constituent Assembly and was so called "the girl of Montecitorio".
In 1957 Mattei was expelled from the Italian Communist Party because of her opposition to Stalinism and to the Togliatti politics. She later became national director of the Italian Women Union (UDI) and introduced the use of mimosa for the Women's Day at the request of Luigi Longo. Mattei felt that the French symbols of IWD, violets and lilies of the valley, were too scarce and expensive to be used in poor, rural Italian areas, so she proposed the mimosa as an alternative.
- Redazione Il Fatto Quotidiano (12 March 2013). "Addio a Teresa Mattei, era l'ultima donna rimasta tra le elette alla Costituente". Il Fatto. Retrieved 30 March 2013.
- Patrizia Gabrielli. Il 1946, le donne, la Repubblica. Donzelli Editore, 2009. ISBN 886036440X.
- Lucía Magi (26 March 2013). "Teresa Mattei, símbolo de la resistencia al fascismo". El País. Retrieved 30 March 2013.
- Patrizia Pacini. La costituente: storia di Teresa Mattei. Altreconomia, 2011. ISBN 8865160411.
- Paolo Paoletti. Il delitto Gentile. Le Lettere, 2005. ISBN 8871668944.
- Antonio Carioti (6 August 2004). "«Sanguinetti venne a dirmi che Gentile doveva morire»". Corriere della Sera. Retrieved 30 March 2013.
- Pirro, Dierdre (2013-03-25). "Teresa Mattei, Flower power". The Florentine. Retrieved 2013-04-01.
- Laura Fantone, Ippolita Franciosi, (R)Esistenze: il passaggio della staffetta, Morgana, 2005. ISBN 8889033312.