Parker is a census-designated place and unincorporated community in central Yakima County, Washington, United States.

It is located on U.S. Route 97 between the cities of Union Gap and Wapato on the Yakama Indian Reservation.

Police service is delivered by the Yakima County Sheriffs department, and a local volunteer fire station is present.

Local residents are primarily employed in occupations related to agriculture and fruit orchards.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.