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- Raccoon Township, Gallia County, Ohio
- Radnor Township, Delaware County, Ohio
- Randolph Township, Montgomery County, Ohio (defunct)
- Randolph Township, Portage County, Ohio
- Range Township, Madison County, Ohio
- Rarden Township, Scioto County, Ohio
- Ravenna Township, Portage County, Ohio
- Reading Township, Perry County, Ohio
- Recovery Township, Mercer County, Ohio
- Reed Township, Seneca County, Ohio
- Reily Township, Butler County, Ohio
- Rice Township, Sandusky County, Ohio
- Rich Hill Township, Muskingum County, Ohio
- Richfield Township, Henry County, Ohio
- Richfield Township, Lucas County, Ohio
- Richfield Township, Summit County, Ohio
- Richland Township, Allen County, Ohio
- Richland Township, Belmont County, Ohio
- Richland Township, Clinton County, Ohio
- Richland Township, Darke County, Ohio
- Richland Township, Defiance County, Ohio
- Richland Township, Fairfield County, Ohio
- Richland Township, Guernsey County, Ohio
- Richland Township, Holmes County, Ohio
- Richland Township, Logan County, Ohio
- Richland Township, Marion County, Ohio
- Richland Township, Vinton County, Ohio
- Richland Township, Wyandot County, Ohio
- Richmond Township, Ashtabula County, Ohio
- Richmond Township, Huron County, Ohio
- Ridge Township, Van Wert County, Ohio
- Ridge Township, Wyandot County, Ohio
- Ridgefield Township, Huron County, Ohio
- Ridgeville Township, Henry County, Ohio
- Ridgeville Township, Lorain County, Ohio (defunct)
- Riley Township, Putnam County, Ohio
- Riley Township, Sandusky County, Ohio
- Ripley Township, Holmes County, Ohio
- Ripley Township, Huron County, Ohio
- Riveredge Township, Cuyahoga County, Ohio (defunct)
- Rochester Township, Lorain County, Ohio
- Rockpoint Township, Cuyahoga County, Ohio (defunct)
- Rome Township, Ashtabula County, Ohio
- Rome Township, Athens County, Ohio
- Rome Township, Lawrence County, Ohio
- Rootstown Township, Portage County, Ohio
- Rose Township, Carroll County, Ohio
- Ross Township, Butler County, Ohio
- Ross Township, Greene County, Ohio
- Ross Township, Jefferson County, Ohio
- Ross Township, Wood County, Ohio (defunct)
- Roundhead Township, Hardin County, Ohio
- Royalton Township, Cuyahoga County, Ohio (defunct)
- Royalton Township, Fulton County, Ohio
- Ruggles Township, Ashland County, Ohio
- Rumley Township, Harrison County, Ohio
- Rush Creek Township, Fairfield County, Ohio
- Rush Township, Champaign County, Ohio
- Rush Township, Scioto County, Ohio
- Rush Township, Tuscarawas County, Ohio
- Rushcreek Township, Logan County, Ohio
- Russell Township, Geauga County, Ohio
- Rutland Township, Meigs County, Ohio
Read more about this topic: List Of Townships In Ohio