East Earl Township is a township in northeastern Lancaster County, Pennsylvania, United States. At the 2010 census the population was 6,507.
The Spring Grove Forge Mansion and Henry Weaver Farmstead are listed on the National Register of Historic Places.
According to the U.S. Census Bureau, the township has a total area of 24.7 square miles (64 km2), of which, 24.6 square miles (64 km2) of it is land and 0.1 square miles (0.26 km2) of it (0.24%) is water. It contains the communities of Union Grove, Weaverland, Goodville, Blue Ball, East Earl, Fetterville, and Cedar Lane. It surrounds the borough of Terre Hill, a separate municipality. Welsh Mountain, elevation 1,107 feet (337 m), is on the southern border of the township.
At the 2000 census there were 5,723 people, 1,738 households, and 1,485 families living in the township. The population density was 232.6 people per square mile (89.8/km2). There were 1,795 housing units at an average density of 73.0/sq mi (28.2/km2). The racial makeup of the township was 98.17% White, 0.58% Black or African American, 0.05% Native American, 0.37% Asian, 0.03% Pacific Islander, 0.12% from other races, and 0.68% from two or more races. 0.66% of the population were Hispanic or Latino of any race.