HP2 or variant, may refer to:

HP2, a postcode for Hemel Hempstead, see HP postcode area hP2, a Pearson symbol Harry Potter and the Chamber of Secrets, the second Harry Potter novel Harry Potter and the Chamber of Secrets (film), the second Harry Potter film Handley Page Type B a.k.a. H.P.2, an airplane HP-2, a glider designed by Richard Schreder HP2, a type of photographic stock, see Ilford HP Haemophilus phage HP2, a virus BMW HP2 Enduro, a motorcycle BMW HP2 Sport, a motorcycle Hp.2 (proceed at reduced speed), from German railway signalling Hawaii: Part II, an album by Miracle Musical

See also HP (disambiguation)