Avenger may refer to one who seeks revenge. Other uses include: In fiction

• Avenger (anime), a Japanese anime featuring Layla Ashley
• Avenger (novel), thriller novel by Frederick Forsyth
• Avenger (Eagle), a fictional vigilante in the Eagle comic
• Avenger (Star Trek), a Star Trek novel
• Avenger (comics), a 1950s comic book superhero
• Duck Avenger, Donald Duck's alter-ego
• Holy Avenger, a Brazilian comic book series
• The Toxic Avenger, a B-movie
• TIE Avenger, a model of TIE Fighter in the Star Wars universe
• Avenger (Star Wars), the name of an Imperial-class Star Destroyer from the Star Wars universe
• Avenger II (Star Wars), the name of an Imperial II-class Star Destroyer from the Star Wars universe
• Avenger, the protagonist from the Way of the Tiger series of gamebooks
• Avenger (Fate/hollow ataraxia), a character from the Japanese visual novel Fate/hollow ataraxia
• "Avenger 2.0", an episode of the television series Stargate SG-1
• The Avenger, a modern comic book character

In the military

• Avro Avenger, biplane fighter design
• HMS Avenger, ships in the Royal Navy
• TBF Avenger, an American torpedo bomber
• GAU-8 Avenger, the cannon carried by the A-10 Thunderbolt II
• M1097 Avenger, an air defense system consisting of eight Stinger missiles mounted on an HMMWV chassis
• USS Avenger, ships in the US Navy
• The SP 17pdr, A30 (Avenger), a variant of the Cruiser Mk VIII Challenger British self-propelled gun
• The Avenger class escort carrier, a British aircraft carrier

Way of the Tiger is the name of a series of adventure gamebooks by Mark Smith & Jamie Thomson set on the world of Orb. The reader takes the part of a young ninja, Avenger on his quest to avenge his foster father and recover the Scrolls of Kettsuinoun Later books present fresh challenges for Avenger to overcome. Compared to other gamebooks such as those in the Fighting Fantasy series, Way of the Tiger provided a more developed storyline and atmosphere, as well as three-dimensional characters.