Hajós is a Hungarian surname. Notable people with the surname include:
Alfréd Hajós (1878–1955), Hungarian swimmer, football (soccer) player, referee, manager, and career architect András Hajós (born 1969), Hungarian sociologist, singer, songwriter, comedian Árpád Hajós (1902–1971), Hungarian footballer György Hajós (1912–1972), Hungarian mathematician Henrik Hajós (1886–1963), Hungarian freestyle swimmer