Ágh is a Hungarian surname. Notable people with the surname include:
Adalbert Agh (born 1945), Romanian rower István Agh (1709–1786), Hungarian Unitarian bishop István Ágh (poet) (1938–2025), Hungarian poet István Ágh (sport shooter) (born 1970), Hungarian sport shooter Norbert Ágh (born 1970), Hungarian swimmer Olivér Ágh (born 1975), Hungarian swimmer Péter Ágh (born 1982), Hungarian politician