Hagar can refer to:

People

• Hagar (Bible), in the Abrahamic faiths, the handmaiden of Sarah (the wife of Abraham), and the mother of Abraham's son Ishmael.
• Sammy Hagar, rock musician.
• Mandy Hagar, New Zealand children's book author.
• Albert Hagar, Canadian politician.
• Regan Hagar, drummer in Malfunkshun.

Other

• Hagarism: The Making of the Islamic World, book on Islam.
• Hagar, Ontario, community in the Canadian province of Ontario
• Hagar Township, Michigan
• Hagar (company), Icelandic retailer company, part of the Baugur Group.
• Hägar the Horrible, comic strip by Dik Browne.

Haggar

• Mike Haggar, video game character