P9

P9 or P-9 may refer to:

Planet Nine, a hypothetical new planet in the far outer solar system Boeing XP-9, 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 set of 9 rare cards from the Magic: The Gathering TCG, widely considered to be the most powerful cards ever printed in the game.