P9 or P-9 may refer to: *

Planet Nine Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orb ...

, a hypothetical new planet in the far outer solar system *

Boeing XP-9 The Boeing XP-9 (company Model 96) was the first monoplane fighter aircraft produced by the United States aircraft manufacturing company Boeing. It incorporated sophisticated structural refinements that were influential in later Boeing designs ...

, a prototype fighter aircraft from the 1930s * Heckler & Koch P9, a semi-automatic pistol * Springfield Armory P9, a semi-automatic pistol * Peruvian Airlines IATA airline designator * P9 (band), a Brazilian boyband * Power Nine, a trading cards game of ''Magic: The Gathering'' *

Psyclon Nine Psyclon Nine is an American band formed in 2000 in San Francisco, CA, known for their unique blend of electronic, industrial metal. Originally, Psyclon Nine's music was Terror EBM with melancholic atmospheres and black metal style vocals. Howe ...

, an aggrotech band * P-9 Project

See also