Greenfield Township may refer to:
Arkansas
- Greenfield Township, Craighead County, Arkansas, in Craighead County, Arkansas
- Greenfield Township, Monroe County, Arkansas, in Monroe County, Arkansas
- Greenfield Township, Poinsett County, Arkansas, in Poinsett County, Arkansas
Illinois
- Greenfield Township, Grundy County, Illinois
Indiana
- Greenfield Township, LaGrange County, Indiana
- Greenfield Township, Orange County, Indiana
Iowa
- Greenfield Township, Adair County, Iowa
- Greenfield Township, Calhoun County, Iowa
- Greenfield Township, Jones County, Iowa
- Greenfield Township, Warren County, Iowa
Kansas
- Greenfield Township, Elk County, Kansas
Michigan
- Greenfield Township, Michigan, defunct
Minnesota
- Greenfield Township, Minnesota
North Dakota
- Greenfield Township, Griggs County, North Dakota, in Griggs County, North Dakota
- Greenfield Township, Traill County, North Dakota, in Traill County, North Dakota
Ohio
- Greenfield Township, Fairfield County, Ohio
- Greenfield Township, Gallia County, Ohio
- Greenfield Township, Huron County, Ohio
Pennsylvania
- Greenfield Township, Blair County, Pennsylvania
- Greenfield Township, Erie County, Pennsylvania
- Greenfield Township, Lackawanna County, Pennsylvania
South Dakota
- Greenfield Township, Brown County, South Dakota, in Brown County, South Dakota