In science:

Bird of prey, also known as a raptor, a type of bird often characterized by a hooked beak, sharp talons, and keen eyesight.

An informal term to refer to certain dinosaurs, most notably the Dromaeosauridae, including the Velociraptor, Deinonychus, Utahraptor and some other theropods such as the Oviraptor and the Gigantoraptor

some primitive birds, such as the Shenzhouraptor

In the South African military:

Raptor weapon, a series of South African Air Force precision guided glide weapons.

In the US military:

VMMT-204, the MV-22 Osprey training squadron of the United States Marine Corps known by the nickname "The Raptors"

F-22 Raptor, a United States Air Force stealth fighter airplane

In technology:

Cagiva Raptor, a motorbike

Raptor FEC Technology

Roboraptor, a robotic dinosaur

RAPTOR reconnaissance pod carried by RAF Tornados

WD Raptor, a high-performance hard disk drive from Western Digital

Raptor 660, an ATV 4-wheel motorcycle produced by Yamaha

Raptor, an R/C Helicopter manufactured by Thunder Tiger

Raptor, the name of early versions of the Gecko Layout Engine

Raptor, an RDF parser and serializer from the Redland RDF Application Framework

In sports and entertainment:

Toronto Raptors, the Canadian NBA basketball team

Ogden Raptors, an American professional baseball team playing in the Pioneer League

Randers Raptors, a Danish floorball team

Raptor (roller coaster), a roller coaster at the Cedar Point amusement park in Sandusky, Ohio

Raptor convention, a contract bridge convention

Raptor, an electric guitar produced by Peavey Guitars

In fiction:

Raptor heavy fighter, a starfighter in the Wing Commander universe

Raptor: Call of the Shadows, a computer game

Raptor, a fictional character from G.I. Joe: A Real American Hero

Raptor (comics), a Marvel Comics superhero from the MC2 universe

Raptor (Marvel Comics)

Raptor (Battlestar Galactica), a military spacecraft in the Battlestar Galactica universe

Raptor, one of the Unreal Tournament 2004 Vehicles (and 2007) as well as a vehicle in Unreal II eXpanded MultiPlayer

Raptor, a novel written by Gary Jennings

Lord Raptor, a character from the Darkstalkers series of fighting games

Raptor, the most common type of enemy Orbital Frame in the Zone of the Enders video game series

Raptor, a member of a group of genetically engineered commandos from Earth's future in the comic book story XTNCT

Raptor, a 2001 made-for-television horror film