Defender, meaning 'that which defends', may refer to:

• Windows Defender, an antispyware technology by Microsoft
• Defender (game), a 1980s arcade game
• Defender (football), an association football position of defence
• The Defenders, several works of fiction
• Land Rover Defender, the original 4x4 off-road car
• The Defender, a black owned newspaper centered in Chicago.
• Defenders (Ireland) were a militant peasant secret society in the 18th century Ireland, who were involved in the 1798 rebellion
• Defenders (comics), a Marvel Comics superhero team.
• A defendant in a case under Scottish law.
• Defender, a 2001 science fiction novel in the Foreigner Universe of C. J. Cherryh
• Connecticut Defenders, Double-A Affiliate of the San Fransisco Giants

See also

• Defender of the faith
• Defense in sports
• Defensor
• Defendant
• Defenceman (hockey)