A cockatoo is a parrot from the bird family Cacatuidae.
Cockatoo may refer also to:
- Cockatoo, Queensland, a locality in Australia
- Cockatoo, Victoria, a town in the Dandenong Ranges, 50 km east of Melbourne, Australia
- USS Cockatoo, two ships of the United States Navy
- Cockatoo railway station, situated on the Puffing Billy Railway, Melbourne
- Cockatoos (novel), a 1954 novel by Australian author Miles Franklin
- The Cockatoos, a 1974 story collection by Australian author Patrick White
- Nakia Cockatoo (born 1996), Australian rules football player