Caprettia is a genus of lichenized fungi in the family Monoblastiaceae. The genus was circumscribed by Augusto Chaves Batista and Heraldo da Silva Maia in 1965, with assigned as the type species. The genus name of Caprettia is in honour of Corrado Capretti (1915–1960), an Italian botanist and professor at University of the Andes (Venezuela) in 1956.