Plainfield Township

Plainfield Township may refer to:


 * Plainfield Township, Will County, Illinois
 * Plainfield Township, Iosco County, Michigan
 * Plainfield Township, Kent County, Michigan
 * Plainfield Township, Union County, New Jersey, now the city of Plainfield
 * Plainfield Township, Pennsylvania
 * Plainfield Township, Brule County, South Dakota, in Brule County, South Dakota