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
- Peter G. Gyarmati (born 1941), American computer scientist
- Jozsef Gyarmati (born 1949), Mechanical Engineer left to South Africa
- Ildikó Gyarmati (born 1991), Daughter of Jozsef, Attorney