Arizona Diamondbacks, a Major League Baseball team, named for the above rattlesnake

Luke Cage, once known as Diamondback

Crotalus atrox, the western diamondback rattlesnake

Crotalus adamanteus, the eastern diamondback rattlesnake

Diamondback, a mouse created by Razer USA Ltd

VFA-102 Diamondbacks, a U.S. Navy strike fighter squadron

Diamondback (comics), a woman who has been both a hero and villain and occasional lover of Captain America

Diamondback water snake, a common species of water snake in North America

Diamondback (game), a fictional card game from the Cerebus comics

Diamondback terrapin, a turtle, the state reptile of Maryland

The Diamondback, the official student newspaper of the University of Maryland, College Park

Diamondback moth, a European moth that has since spread to North America