Giant-killing

Giant-killing or giant killer may refer to:


 * Killing a literal giant, such as:
 * Gigantomachy, a Greek mythological battle
 * David and Goliath, a biblical story
 * "Jack the Giant Killer", a Cornish fairy tale and legend
 * Upset (competition), occurring when an underdog beats the favourite (or top dog)
 * Underdog, a person or group in a competition who is largely expected to lose
 * Giant Killing, a manga and anime series
 * Giant Killer (call sign), a military aviation call sign in the United States
 * "Giant Killer" (story), a 1945 short story by A. Bertram Chandler
 * Giantkiller, a DC Comics limited series