Pennant may refer to:
- pennon, a narrow, tapering flag commonly flown by ships at sea:
- Pennant (commissioning), the traditional sign of a warship, flown from its masthead while the ship is in commission.
- Broad pennant, flown from the masthead of a Royal Navy ship to indicate the presence of a commodore on board.
- Pennant (church), flown by navies during services on board ships.
- pennant number, a number used to identify ships by the modern Royal Navy and other navies of Europe and the Commonwealth.
Pennant may also refer to:
- pennant (sports), a commemorative flag displayed or flown by a league-winning team
- pennant race, the last few weeks of the regular American professional baseball season
- A reference to the pennant-shaped "No Passing Zone" prohibitory traffic sign found in the United States.
- The common name for the Genus of dragonfly known as Celithemis
Pennant is the surname of
- Jermaine Pennant, an English Football player, currently playing for Liverpool F.C.
- Thomas Pennant, a Welsh naturalist and antiquary
