Manufacturing Companies in Ohio: 131 Verified Firms
Secwyn has verified 131 manufacturing companies based in Ohio. The largest groups are All Other Plastics Product Manufacturing (12); All Other Miscellaneous Fabricated Metal Product Manufacturing (8); and Machine Shops (8). By headcount, 76% have 51–200 employees, 18% have 201–500 employees, and 5% fall in other size bands. Size is not yet confirmed for 1. Cleveland has the most (12), followed by Cincinnati (7) and Hamilton (7).
Company size
- 51–200 employees99 · 76%
- 201–500 employees24 · 18%
- 501–1,000 employees7 · 5%
- Size not confirmed1 · 1%
Top cities
- Cleveland12 · 9%
- Cincinnati7 · 5%
- Hamilton7 · 5%
- Canton4 · 3%
- Dayton4 · 3%
- Columbus3 · 2%
- Piqua3 · 2%
Cities with fewer than 3 companies are not listed.
Largest sub-industries
| Sub-industry | NAICS | Companies |
|---|---|---|
| All Other Plastics Product Manufacturing | 326199 | 12 |
| All Other Miscellaneous Fabricated Metal Product Manufacturing | 332999 | 8 |
| Machine Shops | 332710 | 8 |
| Bolt, Nut, Screw, Rivet, and Washer Manufacturing | 332722 | 3 |
| Commercial Printing (except Screen and Books) | 323111 | 3 |
| Machine Tool Manufacturing | 333517 | 3 |
| Measuring, Dispensing, and Other Pumping Equipment Manufacturing | 333914 | 3 |
| Metal Crown, Closure, and Other Metal Stamping (except Automotive) | 332119 | 3 |
A sample of these companies
A few of the 131 manufacturing companies in Ohio. Names, websites and contacts are shown after you sign up.
Company #1 · name shown after sign-up
Rolling Mill and Other Metalworking Machinery Manufacturing · 51–200 employees
Company #2 · name shown after sign-up
Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers · 51–200 employees
Company #3 · name shown after sign-up
All Other Miscellaneous Fabricated Metal Product Manufacturing · 51–200 employees
Company #4 · name shown after sign-up
Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing · 51–200 employees · Piqua
Company #5 · name shown after sign-up
Small Arms, Ordnance, and Ordnance Accessories Manufacturing · 51–200 employees · Cincinnati
Company #6 · name shown after sign-up
Household Furniture (except Wood and Upholstered) Manufacturing · 201–500 employees
Find the Ohio manufacturing companies that fit what you sell
Describe what you sell and Secwyn shows the companies most likely to buy it, with the reasons for each match. Sign up free and your first 3 company reveals are on us: name, website, description with its source, contact channels and the roles to contact.
How Secwyn verifies these companies
- Every company description is a sentence visible on the company's own website. Inside the product, each one links to its source page.
- Each company has a NAICS industry code, the US government standard for classifying businesses.
- All companies are based in the United States. Location and size come from public sources, including company filings and People Data Labs.
Data updated October 6, 2026.