The word Harrier when used alone, has several possible meanings in the English language.
The term "Harrier", when used by itself can refer to:
- Common nickname of Hawker Siddeley Harrier fighter aircraft
- Name of a small breed of hounds. See: Harrier (Dog)
- A member of the hawk genus Circus. See: harrier (bird)
- A cross-country runner (lower-case "harrier").