Fazzini was born on 4 May 1913 at Grottammare, in the province of Ascoli Piceno in the Marche, to Vittorio Fazzini and Maria Alessandrini. As a boy he worked with his brothers in the family carpentry workshop, where he learned to carve wood. In 1930, with the help of the poet Mario Rivosecchi, he moved to Rome to study at the Scuola libera del nudo.[4][5]