HP1

HP1 or variant, may refer to: * Heterochromatin Protein 1, an important marker molecule in epigenetic research * The postal code for part of Hemel Hempstead in Dacorum, see HP postcode area * hP1, a Pearson symbol * Harry Potter and the Philosopher's Stone, the first novel in J.K. Rowling's Harry Potter series * Harry Potter and the Philosopher's Stone (film), the first film in J.K. Rowling's Harry Potter series * Handley Page Type A aka H.P.1, an airplane * HP-1, a glider designed by Richard Schreder * HP1, a type of photographic stock, see Ilford HP * Haemophilus phage HP1, a virus * Hp.1 (proceed), from German railway signalling

HP1

HP1 or variant, may refer to: * Heterochromatin Protein 1, an important marker molecule in epigenetic research * The postal code for part of Hemel Hempstead in Dacorum, see HP postcode area * hP1, a Pearson symbol * Harry Potter and the Philosopher's Stone, the first novel in J.K. Rowling's Harry Potter series * Harry Potter and the Philosopher's Stone (film), the first film in J.K. Rowling's Harry Potter series * Handley Page Type A aka H.P.1, an airplane * HP-1, a glider designed by Richard Schreder * HP1, a type of photographic stock, see Ilford HP * Haemophilus phage HP1, a virus * Hp.1 (proceed), from German railway signalling