Principal
- Am I the Drama?
- Flue pipe
- K-12 (album)
- List of pipe organ stops
- Principal (Catholic Church)
- Principal (academia)
- Principal (architecture)
- Principal (bond)
- Principal (civil service)
- Principal (commercial law)
- Principal (computer security)
- Principal (criminal law)
- Principal (education)
- Principal (finance)
- Principal (music)
- Principal Financial Group
- Principal dancer
- Principal photography
- Principal, Cape Verde
- Principal, Ecuador
- Principle (disambiguation)
- The Principal
- The Principal (TV series)
- The Principal (Vice Principals)
- Victoria Principal