Union Township
- Ashley County, Arkansas
- Baxter County, Arkansas
- Benton County, Missouri
- Brule County, South Dakota
- Canadian County, Oklahoma
- Clark County, Missouri
- Conway County, Arkansas
- Crawford County, Missouri
- Daviess County, Missouri
- Davison County, South Dakota
- Day County, South Dakota
- Dunklin County, Missouri
- Edmunds County, South Dakota
- Faulk County, South Dakota
- Faulkner County, Arkansas
- Franklin County, Missouri
- Fulton County, Arkansas
- Garfield County, Oklahoma
- Grady County, Oklahoma
- Grand Forks County, North Dakota
- Greene County, Arkansas
- Harrison County, Missouri
- Holt County, Missouri
- Independence County, Arkansas
- Iron County, Missouri
- Izard County, Arkansas
- Jackson County, Arkansas
- Jasper County, Missouri
- Kingfisher County, Oklahoma
- Laclede County, Missouri
- Lee County, Arkansas
- Lewis County, Missouri
- Lincoln County, Missouri
- Lincoln County, Oklahoma
- Marion County, Arkansas
- Marion County, Iowa
- Marion County, Missouri
- McCook County, South Dakota
- Meade County, South Dakota
- Monroe County, Missouri
- Moody County, South Dakota
- Nevada County, Arkansas
- Nodaway County, Missouri
- North Union Township (disambiguation)
- Ouachita County, Arkansas
- Payne County, Oklahoma
- Pender County, North Carolina
- Perry County, Arkansas
- Polk County, Missouri
- Pottawatomie County, Kansas
- Prairie County, Arkansas
- Pulaski County, Missouri
- Putnam County, Missouri
- Randolph County, Arkansas
- Randolph County, Missouri
- Randolph County, North Carolina
- Rawlins County, Kansas
- Ripley County, Missouri
- Robeson County, North Carolina
- Rush County, Kansas
- Rutherford County, North Carolina
- Saline County, Arkansas
- Sanborn County, South Dakota
- Scotland County, Missouri
- Shelby County, Iowa
- Spink County, South Dakota
- Stafford County, Kansas
- Stone County, Arkansas
- Stone County, Missouri
- Sullivan County, Missouri
- Union (disambiguation)
- Union Charter Township, Michigan
- Union County, Iowa
- Union Grove Township (disambiguation)
- Union Township, Adair County, Iowa
- Union Township, Adams County, Indiana
- Union Township, Adams County, Iowa
- Union Township, Adams County, Pennsylvania
- Union Township, Appanoose County, Iowa
- Union Township, Auglaize County, Ohio
- Union Township, Barton County, Kansas
- Union Township, Barton County, Missouri
- Union Township, Belmont County, Ohio
- Union Township, Benton County, Indiana
- Union Township, Benton County, Iowa
- Union Township, Berks County, Pennsylvania
- Union Township, Black Hawk County, Iowa
- Union Township, Bollinger County, Missouri
- Union Township, Boone County, Indiana
- Union Township, Boone County, Iowa
- Union Township, Branch County, Michigan
- Union Township, Brown County, Ohio
- Union Township, Brule County, South Dakota
- Union Township, Butler County, Kansas
- Union Township, Butler County, Nebraska
- Union Township, Butte County, South Dakota
- Union Township, Calhoun County, Iowa
- Union Township, Camden County, New Jersey
- Union Township, Carroll County, Iowa
- Union Township, Carroll County, Ohio
- Union Township, Cass County, Iowa
- Union Township, Cass County, Missouri
- Union Township, Centre County, Pennsylvania
- Union Township, Cerro Gordo County, Iowa
- Union Township, Champaign County, Ohio
- Union Township, Clark County, Indiana
- Union Township, Clay County, Kansas
- Union Township, Clearfield County, Pennsylvania
- Union Township, Clermont County, Ohio
- Union Township, Clinton County, Indiana
- Union Township, Clinton County, Ohio
- Union Township, Crawford County, Indiana
- Union Township, Crawford County, Iowa
- Union Township, Crawford County, Pennsylvania
- Union Township, Cumberland County, Illinois
- Union Township, Dallas County, Iowa
- Union Township, Davis County, Iowa
- Union Township, Davison County, South Dakota
- Union Township, Day County, South Dakota
- Union Township, DeKalb County, Indiana
- Union Township, Delaware County, Indiana
- Union Township, Delaware County, Iowa
- Union Township, Des Moines County, Iowa
- Union Township, Dickinson County, Kansas
- Union Township, Dodge County, Nebraska
- Union Township, Doniphan County, Kansas
- Union Township, Edmunds County, South Dakota
- Union Township, Effingham County, Illinois
- Union Township, Elkhart County, Indiana
- Union Township, Erie County, Pennsylvania
- Union Township, Faulk County, South Dakota
- Union Township, Fayette County, Iowa
- Union Township, Fayette County, Ohio
- Union Township, Floyd County, Iowa
- Union Township, Fulton County, Illinois
- Union Township, Fulton County, Indiana
- Union Township, Fulton County, Pennsylvania
- Union Township, Gibson County, Indiana
- Union Township, Grand Traverse County, Michigan
- Union Township, Guthrie County, Iowa
- Union Township, Hancock County, Ohio
- Union Township, Hardin County, Iowa
- Union Township, Harrison County, Iowa
- Union Township, Hendricks County, Indiana
- Union Township, Highland County, Ohio
- Union Township, Houston County, Minnesota
- Union Township, Howard County, Indiana
- Union Township, Hunterdon County, New Jersey
- Union Township, Huntingdon County, Pennsylvania
- Union Township, Huntington County, Indiana
- Union Township, Jackson County, Iowa
- Union Township, Jasper County, Indiana
- Union Township, Jefferson County, Kansas
- Union Township, Jefferson County, Pennsylvania
- Union Township, Johnson County, Indiana
- Union Township, Johnson County, Iowa
- Union Township, Kingman County, Kansas
- Union Township, Knox County, Nebraska
- Union Township, Knox County, Ohio
- Union Township, Kossuth County, Iowa
- Union Township, LaPorte County, Indiana
- Union Township, Lawrence County, Ohio
- Union Township, Lawrence County, Pennsylvania
- Union Township, Lebanon County, Pennsylvania
- Union Township, Licking County, Ohio
- Union Township, Livingston County, Illinois
- Union Township, Logan County, Ohio
- Union Township, Louisa County, Iowa
- Union Township, Lucas County, Iowa
- Union Township, Luzerne County, Pennsylvania
- Union Township, Madison County, Indiana
- Union Township, Madison County, Iowa
- Union Township, Madison County, Ohio
- Union Township, Mahaska County, Iowa
- Union Township, Marion County, Iowa
- Union Township, Marshall County, Indiana
- Union Township, McCook County, South Dakota
- Union Township, McPherson County, Kansas
- Union Township, Meade County, South Dakota
- Union Township, Mercer County, Ohio
- Union Township, Miami County, Indiana
- Union Township, Miami County, Ohio
- Union Township, Mifflin County, Pennsylvania
- Union Township, Mitchell County, Iowa
- Union Township, Monroe County, Iowa
- Union Township, Montgomery County, Indiana
- Union Township, Moody County, South Dakota
- Union Township, Morgan County, Ohio
- Union Township, Muskingum County, Ohio
- Union Township, O'Brien County, Iowa
- Union Township, Ohio County, Indiana
- Union Township, Parke County, Indiana
- Union Township, Perry County, Indiana
- Union Township, Perry County, Missouri
- Union Township, Phelps County, Nebraska
- Union Township, Pike County, Ohio
- Union Township, Plymouth County, Iowa
- Union Township, Polk County, Iowa
- Union Township, Porter County, Indiana
- Union Township, Pottawatomie County, Kansas
- Union Township, Poweshiek County, Iowa
- Union Township, Putnam County, Ohio
- Union Township, Randolph County, Indiana
- Union Township, Rawlins County, Kansas
- Union Township, Republic County, Kansas
- Union Township, Rice County, Kansas
- Union Township, Ringgold County, Iowa
- Union Township, Ross County, Ohio
- Union Township, Rush County, Indiana
- Union Township, Rush County, Kansas
- Union Township, Sanborn County, South Dakota
- Union Township, Saunders County, Nebraska
- Union Township, Schuylkill County, Pennsylvania
- Union Township, Scioto County, Ohio
- Union Township, Sedgwick County, Kansas
- Union Township, Shelby County, Indiana
- Union Township, Shelby County, Iowa
- Union Township, Sheridan County, Kansas
- Union Township, Sherman County, Kansas
- Union Township, Snyder County, Pennsylvania
- Union Township, Spink County, South Dakota
- Union Township, St. Joseph County, Indiana
- Union Township, Stafford County, Kansas
- Union Township, Ste. Genevieve County, Missouri
- Union Township, Story County, Iowa
- Union Township, Tioga County, Pennsylvania
- Union Township, Tippecanoe County, Indiana
- Union Township, Tuscarawas County, Ohio
- Union Township, Union County, Indiana
- Union Township, Union County, Iowa
- Union Township, Union County, New Jersey
- Union Township, Union County, Ohio
- Union Township, Union County, Pennsylvania
- Union Township, Van Buren County, Iowa
- Union Township, Van Wert County, Ohio
- Union Township, Vanderburgh County, Indiana
- Union Township, Warren County, Iowa
- Union Township, Warren County, Ohio
- Union Township, Washington County, Kansas
- Union Township, Washington County, Pennsylvania
- Union Township, Wayne County, Iowa
- Union Township, Wells County, Indiana
- Union Township, White County, Indiana
- Union Township, Whitley County, Indiana
- Union Township, Woodbury County, Iowa
- Union Township, Worth County, Iowa
- Van Buren County, Arkansas
- Warren County, Iowa
- Washington County, Kansas
- Washington County, Missouri
- Washita County, Oklahoma
- Wayne County, Iowa
- Webster County, Missouri
- West Chester Township, Butler County, Ohio
- West Union Township (disambiguation)
- White County, Arkansas
- Wilkes County, North Carolina
- Woodward County, Oklahoma
- Worth County, Missouri
- Wright County, Missouri