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
See also edit
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