HP3

HP3 or variant, may refer to:

HP3, a postcode for Hemel Hempstead, see HP postcode area
hP3, a Pearson symbol
Harry Potter and the Prisoner of Azkaban, the third Harry Potter novel
Harry Potter and the Prisoner of Azkaban (film), the third Harry Potter film
Handley Page Type C aka H.P.3, an airplane
HP-3, a glider designed by Richard Schreder
HP3, a type of photographic stock, see Ilford HP
HP³, Heat Flow and Physical Properties Package, an instrument aboard the InSight Mars lander
Hydrogen triphosphide

See also