Hacohen is a surname, and is a variant of Cohen, the Hebrew word for "priest". Notable people with the surname include:
Aviad Hacohen (born 1962), Israeli lawyer and legal scholar David Hacohen (1898–1984), Israeli politician Menachem Hacohen (1932–2025), Israeli rabbi, writer and politician Moshe Hacohen (1874–1950), Tunisian rabbi Orit Farkash-Hacohen (born 1970), Israeli lawyer and politician Ran HaCohen (born 1964), Israeli writer and translator Shalom Hacohen (1772–1845), Hebrew dramatist and poet