Lancaster Township may refer to:
Canada Lancaster Township, Ontario, now part of South Glengarry
United States Arkansas Lancaster Township, Crawford County, Arkansas, in Crawford County, Arkansas
Illinois Lancaster Township, Stephenson County, Illinois
Indiana Lancaster Township, Huntington County, Indiana Lancaster Township, Jefferson County, Indiana Lancaster Township, Wells County, Indiana
Iowa East Lancaster Township, Keokuk County, Iowa West Lancaster Township, Keokuk County, Iowa
Kansas Lancaster Township, Atchison County, Kansas
Pennsylvania Lancaster Township, Butler County, Pennsylvania Lancaster Township, Lancaster County, Pennsylvania