WA3 may refer to:
*
Washington's 3rd congressional district
Washington's 3rd congressional district encompasses the southernmost portion of Western Washington. It includes the counties of Lewis, Pacific, Wahkiakum, Cowlitz, Clark, and Skamania; as well as a small portion of southern Thurston county. ...
*
Washington State Route 3
State Route 3 (SR 3) is a State highways in Washington, state highway in the U.S. state of Washington (state), Washington, serving the Kitsap Peninsula in Mason County, Washington, Mason and Kitsap County, Washington, Kitsap counties ...
* ''
Wild Arms 3'', a role-playing video game
* WA3, a postcode district in Warrington, England; see
WA postcode area
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