Washington Township is one of fifteen townships in Wayne County, Indiana, United States. As of the 2010 census, its population was 1,436 and it contained 626 housing units.

Wayne County is a county located in east central Indiana, United States, on the border with Ohio. As of the 2020 United States Census, the population was 66,553. The county seat is Richmond. Wayne County comprises the Richmond, IN Micropolitan Statistical Area. Richmond hosts Earlham College, a small private liberal arts college.