Pup may refer to:
In zoology:
- Puppies, younger dogs
- Pinniped (seal) young
- Shark young
- Rodent young
In other uses:
- Sopwith Pup, an aircraft used by the British in World War I
- Beagle Pup, a 1960s British light aircraft
- Michael Clarke (cricketer) or Pup, Australian cricketer
- Puppis or Pup, a constellation
- Pups (film), a 1999 film starring Burt Reynolds
- Pup, a front end for Yellowdog Updater, Modified
- An abbreviated term for pickup found on electric musical instruments
- Polytechnic University of the Philippines
- "the Pup", an affectionate term for the white dwarf star Sirius B
In computer:
- Potentially Unwanted Program