Terzi is a surname. People with this surname include:
Aleardo Terzi (1870–1943), Italian illustrator and poster artist
Amedeo John Engel Terzi (1872–1956), Italian illustrator, brother of Aleardo
Antonia Terzi (born 1971), Italian aerodynamicist
Claudio Terzi, (born 1984), Italian footballer
Cristoforo Terzi (1692–1743), Italian painter
Filippo Terzi (1520–1597), Italian military and civil architect and engineer
Francesco Terzi (c. 1525–1600), Italian painter
Francesco Lana de Terzi, SJ (c. 1631–1687) Italian Jesuit and aeronautics pioneer
Mehmet Terzi, (born 1955), Turkish marathon runner
DJ Quicksilver (born Orhan Terzi 1965), Turkish-born German DJ and music producer