Philip Brett (1937–2002) was a British-born American musicologist.
Philip or Phillip Brett may also refer to:
- Philip Brett (cricketer) (1816–1872), English cricketer
- Philip Milledoler Brett (1871–1960), thirteenth President of Rutgers University
- Phillip Brett (politician) (born 1991 or 1992), Unionist politician from Northern Ireland