Tihanyi is a surname of Hungarian origin. Notable people with the surname include:
Endre Tihanyi (1945–2022), Hungarian gymnast Jenő Tihanyi (1936–2007), Canadian swimming coach József Tihanyi (born 1946), Hungarian athlete Kálmán Tihanyi (1897–1947), Hungarian physicist and inventor Lajos Tihanyi (1885–1938), Hungarian painter and lithographer László Tihanyi (born 1956), Hungarian composer and conductor Peter Tihanyi (born 2000), Hungarian professional wrestler Sándor Tihanyi (born 1963), Hungarian motorcycle rider