This is a list of law enforcement agencies in the US state of Washington.
According to the US Bureau of Justice Statistics' 2008 Census of State and Local Law Enforcement Agencies, the state had 260 law enforcement agencies employing 11,411 sworn police officers, about 174 for each 100,000 residents. The state has the lowest ratio of police officers to residents of any state, compared to a national average of 251 per 100,000 residents.