Manasseh ( /mə.ˈnæs.ə/; Hebrew: מְנַשֵּׁה‎ "Menashé") is an ancient Hebrew male name, meaning "causing to forget".

Manasseh or Menashe may refer to:

  • Manasseh of Judah, a king of the kingdom of Judah
  • Manasseh (tribal patriarch), a son of Joseph, according to the Torah
  • Manasseh, a Jewish-born priest who married a Samaritan and withdrew from Jerusalem to Mount Gerizim
  • Menasseh or Manasseh was the name of two Khazar rulers of the Bulanid dynasty:
    • Menasseh I, mid to late 9th century CE
    • Menasseh II, late 9th century CE
  • Manasseh (High Priest), the ancestor of a priest named Jonathan, mentioned in the Book of Judges as being the son of Gershom, son of Manasseh
  • Menashe Amir (born 1940), Persian-language broadcaster on Israel Radio International
  • Menashe Kadishman (born 1932), Israeli sculptor and painter
  • Menashe Klein (1924–2011), Hasidic Rebbe and posek
  • Menashe Oppenheim (1905–73), Polish Jewish singer, composer, and songwriter