Hajos () may refers to the following: People Alfréd Hajós (1878–1955), Hungarian athlete András Hajós (born 1969), Hungarian singer Árpád Hajós (1902–1971), Hungarian footballer György Hajós (1912–1972), Hungarian mathematician Henrik Hajós (1886–1963), Hungarian freestyle swimmer Karl Hajos (1889–1950), Hungarian composer Zoltan Hajos (1926–2022), Hungarian-American organic chemist Other The Hajos–Parrish–Eder–Sauer–Wiechert reaction in organic chemistry Hajós, a town in Bács-Kiskun county, Hungary