PWH may refer to:
- Pee-wee Herman, a comic fictional character created and portrayed by Paul Reubens
- Prince of Wales Hospital, Shatin, Hong Kong, China
- Prince of Wales Hospital, Sydney, New South Wales, Australia
- Prince of Wales Hospital, now David Hare Block, a part of Medical College Kolkata, India
- Pro Wrestling Holland, an amateur wrestling promotion based in The Netherlands.
- Petawatt hour (PWh), a measure of electrical energy equivalent to power consumption of a quadrillion (10) watts for one hour.