Washington County je názov tridsiatich okresov (counties) v Spojených štátoch amerických:
Washington County (Alabama) Washington County (Arkansas) Washington County (Colorado) Washington County (Florida) Washington County (Georgia) Washington County (Idaho) Washington County (Illinois) Washington County (Indiana) Washington County (Iowa) Washington County (Kansas) Washington County (Kentucky) Washington County (Maryland) Washington County (Maine) Washington County (Minnesota) Washington County (Missouri) Washington County (Mississippi) Washington County (Nebraska) Washington County (New York) Washington County (Severná Karolína) Washington County (Ohio) Washington County (Oklahoma) Washington County (Oregon) Washington County (Pensylvánia) Washington County (Rhode Island) Washington County (Tennessee) Washington County (Texas) Washington County (Utah) Washington County (Virgínia) Washington County (Vermont) Washington County (Wisconsin)