| District | Senator | Party | Residence | Counties represented | Term limited | First elected |
| 1 | Rob McColley | Republican | Napoleon | Defiance, Fulton, Hancock, Hardin, Henry, Logan, Paulding, Putnam, Van Wert, Williams | 2026 | 2017* |
| 2 | | Republican | Bowling Green | Erie, Huron, Lucas, Ottawa, Wood | 2028 | 2019* |
| 3 | Michele Reynolds | Republican | Canal Winchester | Franklin, Madison, Pickaway | 2030 | 2022 |
| 4 | George Lang | Republican | West Chester | Butler | 2028 | 2020 |
| 5 | Steve Huffman | Republican | Tipp City | Butler, Darke, Miami, Montgomery, Preble | 2026 | 2018 |
| 6 | Willis Blackshear Jr. | Democratic | Dayton | Montgomery | 2032 | 2024 |
| 7 | Steve Wilson | Republican | Maineville | Hamilton, Warren | 2026 | 2017* |
| 8 | Louis Blessing | Republican | Hamilton County, Ohio|Colerain Township] | Hamilton | 2028 | 2019* |
| 9 | Catherine Ingram | Democratic | Cincinnati | Hamilton | 2030 | 2022 |
| 10 | | Republican | Springfield | Clark, Clinton, Greene | 2032 | 2024 |
| 11 | Paula Hicks-Hudson | Democratic | Toledo | Lucas | 2030 | 2022 |
| 12 | | Republican | Waynesfield | Allen, Auglaize, Champaign, Darke, Logan, Mercer, Shelby | 2032 | 2024 |
| 13 | Nathan Manning | Republican | North Ridgeville | Huron, Lorain | 2026 | 2018 |
| 14 | Terry Johnson | Republican | McDermott | Adams, Brown, Clermont, Scioto | 2028 | 2019* |
| 15 | Hearcel Craig | Democratic | Columbus | Franklin | 2026 | 2018 |
| 16 | Beth Liston | Democratic | Dublin | Franklin | 2032 | 2024 |
| 17 | Shane Wilkin | Republican | Fayette County, Ohio|Jasper Township] | Fayette, Gallia, Highland, Hocking, Jackson, Lawrence, Perry, Pike, Ross, Vinton | 2030 | 2022 |
| 18 | Jerry Cirino | Republican | Kirtland | Cuyahoga, Lake | 2028 | 2020 |
| 19 | Andrew Brenner | Republican | Powell | Coshocton, Delaware, Holmes, Knox | 2026 | 2018 |
| 20 | Tim Schaffer | Republican | Lancaster | Fairfield, Licking, Perry | 2028 | 2019* |
| 21 | | Democratic | Cleveland | Cuyahoga | 2030 | 2022 |
| 22 | Mark Romanchuk | Republican | Ontario | Ashland, Medina, Richland | 2028 | 2020 |
| 23 | Nickie Antonio | Democratic | Lakewood | Cuyahoga | 2026 | 2018 |
| 24 | | Republican | Strongsville | Cuyahoga | 2032 | 2024 |
| 25 | | Democratic | Columbus | Franklin | 2030 | 2022 |
| 26 | Bill Reineke | Republican | Eden Township, [Wyandot County, Ohio|Eden Township] | Crawford, Marion, Morrow, Sandusky, Seneca, Union, Wyandot | 2028 | 2020 |
| 27 | Kristina Roegner | Republican | Hudson | Geauga, Portage, Summit | 2026 | 2018 |
| 28 | | Democratic | Hudson | Summit | 2032 | 2024 |
| 29 | | Republican | Canton | Stark | 2034 | 2025* |
| 30 | Brian Chavez | Republican | Marietta | Athens, Belmont, Guernsey, Harrison, Jefferson, Meigs, Monroe, Morgan, Noble, Washington | 2032 | 2023* |
| 31 | | Republican | Dover | Guernsey, Muskingum, Stark, Tuscarawas, Wayne | 2030 | 2022 |
| 32 | Sandra O'Brien | Republican | Ashtabula County, Ohio|Lenox Township] | Ashtabula, Geauga, Trumbull | 2028 | 2020 |
| 33 | Alessandro Cutrona | Republican | Canfield | Carroll, Columbiana, Mahoning | 2034 | 2024* |