Oley Township is a township in Berks County, Pennsylvania. As of the 2000 census, the township had a population of 3,583. Oley Township was originally formed in 1740 as a part of Philadelphia County, before Berks County was formed in 1752. The entire township was listed as a historic district by the National Register of Historic Places in 1983.
According to the United States Census Bureau, the township has a total area of 24.2 square miles (62.7 km²). 24.2 square miles (62.7 km²) of it is land, and none of the area is covered with water. It is drained by the Schuylkill River via its tributaries of the Manatawny Creek and Monocacy Creek. Its villages include Limekiln (also in Exeter Township,) Oley, Oley Furnace, Pleasantville, Spangsville, and Yellow House (also in Amity Township.)