OW, O.W. or ow may refer to:
Ow!, an interjection that denotes pain ow (digraph), an English digraph "Ow!" (composition), a Dizzy Gillespie bebop jazz composition Obwalden, a canton of Switzerland Organization Workshop, a method of adult education Executive Airlines (IATA code OW) Overwatch (2016 video game) Outer Wilds, a 2019 space exploration video game Old Westminster, an alumna or alumnus of Westminster School
See also Ouch (disambiguation) OWW (disambiguation)