1P

1P may refer to:
 * 1 naya paisa (Indian coin)
 * 1 paisa (Indian coin)
 * 1p, an arm of Chromosome 1 (human)
 * 1P, proved Oil reserves
 * British Pound Sterling 1p coin, see Penny (British decimal coin)
 * Halley's Comet official name of 1P/Halley
 * One Piece a 1997 Japanese manga and anime
 * Polonia 1, 1P, Polish TV channel of the Polcast Television
 * Single player video game