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 Polonia 1, 1P, Polish TV channel of the Polcast Television Single player video game See also P1 (disambiguation)