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- Caldwell Township, Appanoose County
- Caledonia Township, O'Brien County
- Calhoun Township, Calhoun County
- Calhoun Township, Harrison County
- Calmar Township, Winneshiek County
- Camanche Township, Clinton County
- Cameron Township, Audubon County
- Camp Township, Polk County
- Canaan Township, Henry County
- Canoe Township, Winneshiek County
- Canton Township, Benton County
- Capel Township, Sioux County
- Carl Township, Adams County
- Carlton Township, Tama County
- Carroll Township, O'Brien County
- Carroll Township, Tama County
- Carson Township, Pottawattamie County
- Cascade Township, Dubuque County
- Cass Township, Boone County
- Cass Township, Cass County
- Cass Township, Cedar County
- Cass Township, Clayton County
- Cass Township, Guthrie County
- Cass Township, Hamilton County
- Cass Township, Harrison County
- Cass Township, Jones County
- Cass Township, Shelby County
- Cass Township, Wapello County
- Castle Grove Township, Jones County
- Cedar Township, Benton County
- Cedar Township, Black Hawk County
- Cedar Township, Calhoun County
- Cedar Township, Cherokee County
- Cedar Township, Floyd County
- Cedar Township, Greene County
- Cedar Township, Jefferson County
- Cedar Township, Johnson County
- Cedar Township, Lee County
- Cedar Township, Lucas County
- Cedar Township, Mahaska County
- Cedar Township, Mitchell County
- Cedar Township, Monroe County
- Cedar Township, Muscatine County
- Cedar Township, Pocahontas County
- Cedar Township, Sac County
- Cedar Township, Van Buren County
- Cedar Township, Washington County
- Cedar Falls Township, Black Hawk County
- Centennial Township, Lyon County
- Center Township, Allamakee County
- Center Township, Calhoun County
- Center Township, Cedar County
- Center Township, Clinton County
- Center Township, Decatur County
- Center Township, Dubuque County
- Center Township, Emmet County
- Center Township, Fayette County
- Center Township, Henry County
- Center Township, Jefferson County
- Center Township, Mills County
- Center Township, Monona County
- Center Township, O'Brien County
- Center Township, Pocahontas County
- Center Township, Pottawattamie County
- Center Township, Shelby County
- Center Township, Sioux County
- Center Township, Wapello County
- Center Township, Winnebago County
- Center Grove Township, Dickinson County
- Chariton Township, Appanoose County
- Charleston Township, Lee County
- Charter Oak Township, Crawford County
- Chequest Township, Van Buren County
- Cherokee Township, Cherokee County
- Chester Township, Howard County
- Chester Township, Poweshiek County
- Chickasaw Township, Chickasaw County
- Cincinnati Township, Harrison County
- Clark Township, Tama County
- Clay Township, Clay County
- Clay Township, Grundy County
- Clay Township, Hardin County
- Clay Township, Harrison County
- Clay Township, Jones County
- Clay Township, Marion County
- Clay Township, Polk County
- Clay Township, Shelby County
- Clay Township, Washington County
- Clay Township, Wayne County
- Clay Township, Webster County
- Clayton Township, Clayton County
- Clayton Township, Taylor County
- Clear Creek Township, Jasper County
- Clear Creek Township, Johnson County
- Clear Creek Township, Keokuk County
- Clear Lake Township, Cerro Gordo County
- Clear Lake Township, Hamilton County
- Cleona Township, Scott County
- Clermont Township, Fayette County
- Cleveland Township, Davis County
- Cleveland Township, Lyon County
- Clinton Township, Linn County
- Clinton Township, Ringgold County
- Clinton Township, Sac County
- Clinton Township, Wayne County
- Coffins Grove Township, Delaware County
- Coldwater Township, Butler County
- Colfax Township, Boone County
- Colfax Township, Dallas County
- Colfax Township, Grundy County
- Colfax Township, Page County
- Colfax Township, Pocahontas County
- Colfax Township, Webster County
- College Township, Linn County
- Collins Township, Story County
- Colony Township, Adams County
- Colony Township, Delaware County
- Columbia Township, Tama County
- Columbia Township, Wapello County
- Columbus City Township, Louisa County
- Competine Township, Wapello County
- Concord Township, Dubuque County
- Concord Township, Hancock County
- Concord Township, Hardin County
- Concord Township, Louisa County
- Concord Township, Woodbury County
- Concordia Township, Des Moines County
- Cono Township, Buchanan County
- Cook Township, Sac County
- Coon Township, Buena Vista County
- Coon Valley Township, Sac County
- Cooper Township, Monona County
- Cooper Township, Webster County
- Corinth Township, Humboldt County
- Corwin Township, Ida County
- Corydon Township, Wayne County
- Cox Creek Township, Clayton County
- Crawford Township, Madison County
- Crawford Township, Washington County
- Crescent Township, Pottawattamie County
- Cresco Township, Kossuth County
- Crocker Township, Polk County
- Crystal Township, Hancock County
- Crystal Township, Tama County
- Cummins Township, Pocahontas County
Read more about this topic: List Of Iowa Townships