Gyarmati is a Hungarian surname. Notable people with the surname include:
Andrea Gyarmati (born 1954), Hungarian swimmer Anna Gyarmati (born 1993), Hungarian snowboarder Béla Gyarmati (born 1942), Hungarian fencer Dezső Gyarmati (1927–2013), Hungarian water polo player János Gyarmati (1910–1974), Hungarian footballer and manager Olga Gyarmati (1924–2013), Hungarian athlete