The companies listed in Ohio are primarily large corporate groups, with a strong presence in financial services, insurance, and manufacturing. Notable examples include Progressive Insurance, providing diverse insurance products, and Huntington National Bank, a regional financial services holding company. Cleveland-Cliffs is a North American steel producer, while The J.M. Smucker Co. offers coffee, spreads, and pet food brands. Emerson Network Power specializes in critical infrastructure technologies, and The E.W. Scripps Company is a diversified media company.
Many of these companies have long histories, with several founded in the late 19th or early 20th century, such as Huntington National Bank (1866) and The J.M. Smucker Co. (1897). A significant cluster of headquarters is observed in major cities like Columbus, Cincinnati, and Cleveland, indicating these urban centers as key hubs for corporate operations in the state.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Progressive Insuranceprogressive.com
Offering diverse insurance products including auto, home, renters, and commercial policies with a supportive, inclusive workplace culture. |
37,372 | |||
| 2 |
Huntington National Bankhuntington.com
Regional financial services holding company offering banking, payments, wealth management, and risk products for individuals, businesses, and municipalities through numerous branches and community initiatives. |
20,037 | |||
| 3 |
Cleveland-Cliffsclevelandcliffs.com
Leading North American steel producer with vertical integration from raw materials to steel production, serving automotive and other industries with flat-rolled steel products |
7,867 | |||
| 4 |
Emerson Network Powervertiv.com
Global leader in critical infrastructure technologies & services for ICT systems Offers hardware & software solutions for power, thermal, & infrastructure management to create efficient networks |
6,993 | |||
| 5 |
The J.M. Smucker Co.jmsmucker.com
Leading North American company offering trusted coffee, spreads, baked goods, and pet food brands for consumers and their families. |
5,473 | |||
| 6 |
The E.W. Scripps Companyscripps.com
Diversified media company operating local TV stations, national news outlets, and entertainment brands, delivering quality journalism and popular programming nationwide. |
5,436 | |||
| 7 |
Western & Southern Financial Groupwesternsouthern.com
Group of companies providing life insurance, investment advisory, brokerage services, and real estate management across multiple sectors. |
5,199 | |||
| 8 |
Great American Insurance Groupgreatamericaninsurancegroup.com
An established insurance group offering specialized solutions for niche markets with strong financial stability and a history of excellence Company based in Cincinnati, Ohio |
4,934 | |||
| 9 |
The Cincinnati Insurance Companiescinfin.com
Property casualty insurance group offering business, home, auto, life, and disability insurance through independent agencies across 46 states. |
4,931 | |||
| 10 |
Bread Financialbreadfinancial.com
Personalized payment, lending, and saving solutions empowering millions of U.S. consumers and supporting growth for recognized retail brands. |
4,584 | |||
| 11 |
Roto-Rooter Plumbing and Drain Servicerotorooter.com
North America's largest provider of plumbing repair and drain cleaning services with over 520 locations in the US, Canada, and internationally |
4,420 | |||
| 12 |
Nationwide Financialnationwide.com
A leading Fortune 100 insurance and financial services organization offering life insurance, retirement plans, annuities, and mutual funds through tailored solutions for clients |
3,677 | |||
| 13 |
Aultman Health Foundationaultman.org
Leading provider of healthcare services in Stark County since 1892, offering high-quality care, educational opportunities, wellness programs, and community support |
3,276 | |||
| 14 |
Medical Mutualmedmutual.com
Provides diverse health, life, disability, dental, vision, and indemnity plans, including fully insured, self-funded group, Medicare, and individual plans. |
3,216 | |||
| 15 |
Gosh Enterprises Inc
A growing company overseeing restaurant brands serving Philly Cheesesteaks, Korean-inspired cuisine, deli subs, supporting children in need, and providing solar services |
2,777 | |||
| 16 |
Avery Dennison Label and Packaging Materialslabel.averydennison.com
Global material science and digital identification solutions company, providing branding and information solutions optimizing efficiency, sustainability, and transparency, connecting brands and consumers. |
2,493 | |||
| 17 |
AK Steel Corporationclevelandcliffs.com
Cleveland-Cliffs is a leading North American steel producer, specializing in iron ore pellets and a variety of steel products for diverse markets |
2,433 | |||
| 18 |
Flynn Groupflynn.com
Ownership and operation of multiple leading restaurant brands across the U.S., employing thousands and generating billions in sales. |
2,380 | |||
| 19 |
Sotera Health Companysoterahealth.com
A global health company leveraging over 500 years of combined expertise in scientific safety across medical, pharma, tissue, and food industries |
2,370 | |||
| 20 |
Great Day Improvementsgreatdayimprovements.com
A vertically integrated, direct-to-consumer provider of premium home improvement products with diverse brands, operating across the US with expanding workforce |
2,266 | |||
| 21 |
Genesis Healthcare Systemgenesishcs.org
Integrated healthcare delivery system in Southeastern Ohio offering not-for-profit hospital services, specialized centers, physician network, and various outpatient care centers and affiliates |
2,059 | |||
| 22 |
Kroger Technology & Digitalthekrogerco.com
A retail food company dedicated to feeding the human spirit through a seamless digital shopping experience and creating #ZeroHungerZeroWaste communities by 2025 |
1,990 | |||
| 23 |
Carter Lumbercarterlumber.com
A leading building materials retailer with over 170 locations in 13 states, offering quality products and exceptional customer service to builders and DIY enthusiasts |
1,973 | |||
| 24 |
RDI Corporationrdicorp.com
A comprehensive business solutions provider offering customized outsourced services including contact center, IT, market research, and digital strategy support |
1,947 | |||
| 25 |
Sibcy Clinesibcycline.com
A top independent real estate brokerage with a long history of family ownership and a focus on innovation in marketing and community involvement |
1,572 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
Laird Connectivityezurio.com
A company that simplifies wireless connectivity through high-quality RF modules, System-On-Modules, antennas, IoT devices, and custom solutions with reliable support |
1,517 | |||
| 27 |
Ferro Corporationvibrantz.com
Leading global provider of color solutions, functional coatings, and specialty minerals enhancing performance and vibrancy across diverse industries. |
1,429 | |||
| 28 |
Tremco Roofing and Building Maintenancetremcoroofing.com
A leading innovator in roofing and weatherproofing solutions since 1928, providing comprehensive services including maintenance, restoration, and repair with a focus on quality and innovation |
1,295 | |||
| 29 |
Kokosingkokosing.biz
Family-owned construction firm in the Midwest and Mid-Atlantic region, specializing in innovative solutions and self-performing up to 80% of project work |
1,272 | |||
| 30 |
Cliffs Natural Resourcesclevelandcliffs.com
A leading iron ore mining company in the US supplying pellets to the steel industry, with operations in Michigan, Minnesota, and Western Australia |
1,189 | |||
| 31 |
Howard Hanna Ohiohowardhanna.com
A leading, agent-owned real estate firm in Ohio, dedicated to providing exceptional customer service, building relationships, and making a positive impact in communities |
1,154 | |||
| 32 |
ClaySys Technologiesclaysys.com
Leading technology consulting firm offering custom software development, RPA, NoCode, mobile/web app development, AI/ML, chatbots, and cloud computing services to global clients |
1,121 | |||
| 33 |
Austin Powderaustinpowder.com
The company manufactures industrial explosives, accessories, and offers technical blasting services globally |
1,090 | |||
| 34 |
Avita Health Systemavitahealth.org
A nonprofit health care system in North Central Ohio with hospitals, clinics, and providers dedicated to improving patient experience and community wellbeing |
1,066 | |||
| 35 |
Mission Essentialmissionessential.com
Innovative company providing mission essential solutions to defense, diplomatic, intelligence, law enforcement, and multinational clients with peerless talent and advanced technology |
1,048 | |||
| 36 |
Cameron Mitchell Restaurantscameronmitchell.com
Cameron Mitchell Restaurants operates 48 diverse restaurants, premier event catering, and a luxury boutique hotel in multiple locations across the US |
1,033 | |||
| 37 |
Tire Discounters, Inc.tirediscounters.com
A leading independent tire retailer providing unique customer benefits and automotive services with over 190 locations across several states |
968 | |||
| 38 |
G&J Pepsi-Cola Bottlers, Inc.gjpepsi.com
A family-owned Pepsi-Cola bottler with 14 locations in Ohio and Kentucky, producing, distributing, and marketing over 650 refreshment options |
933 | |||
| 39 |
Associated Materials Innovationsassociatedmaterials.com
A leading provider of residential building products, Associated Materials empowers employees to innovate sustainable solutions for beautiful, energy-efficient homes nationwide |
931 | |||
| 40 |
OnPoint Group, LLConpointgroup.com
We optimize total cost of ownership for critical equipment through expertise and innovation in procurement, maintenance, data management and asset replacement |
819 | |||
| 41 |
World Groupworldshipping.com
Provider of end-to-end supply chain and logistics solutions including ocean drayage, trucking, freight forwarding, customs brokerage, warehousing, and distribution worldwide. |
817 | |||
| 42 |
TalentLaunchmytalentlaunch.com
A strategic partner for staffing firms, offering business solutions, technology, marketing, accounting, and payroll services to accelerate growth |
805 | |||
| 43 |
OTC Industrial Technologiesotcindustrial.com
A leading industrial distributor and service provider offering customized solutions for various industries with a wide range of expert solutions |
775 | |||
| 44 |
Ohio National Financial Servicesconstellationinsurance.com
A financial services company offering insurance protection, wealth accumulation options, and retirement solutions through a network of agencies and distribution organizations |
753 | |||
| 45 |
Staffmark Groupsmgroupna.com
Specializing in staffing and recruiting across commercial, technical, and professional services, as well as process outsourcing Owned by RGF Staffing |
744 | |||
| 46 |
National Interstate Insurance Companynatl.com
A leading provider of insurance solutions for commercial transportation industries nationwide, offering innovative products, superior financial strength, and personalized support |
733 | |||
| 47 |
I Am Boundlessiamboundless.org
The company provides person-centered care for individuals with intellectual and developmental disabilities and behavioral health challenges, empowering them to live boundless lives |
716 | |||
| 48 |
Alliance Data Card Servicesbreadfinancial.com
Bread Financial provides card services previously offered by Alliance Data, offering financial solutions and information through their website and social media |
712 | |||
| 49 |
LSI Industries Inc.lsicorp.com
Manufactures high-performance lighting, retail display solutions, digital signage, and food display equipment with project management for large rollouts. |
704 | |||
| 50 |
Core Specialty Insurance Holdings, Inc.corespecialty.com
Specialty insurer offering property, casualty, and marine insurance for small to mid-sized businesses Emphasizing fast, efficient solutions and dedicated underwriting expertise |
682 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Ohio
- The largest companies in Ohio 2,910
- Manufacturers in Ohio 479
- Multinational companies in Ohio 390
- Companies with in-house R&D in Ohio 277
- Hardware manufacturers in Ohio 233
- Retail chains in Ohio 230
- Education providers in Ohio 223
- Professional services firms in Ohio 195
- Hospitals and Health Care companies in Ohio 182
- Healthcare providers in Ohio 181
- Financial services firms in Ohio 162
- Critical infrastructure operators in Ohio 153
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- Contract manufacturers in Ohio 122
- Chemical companies in Ohio 120
- IT services companies in Ohio 118
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- Machinery Manufacturing companies in Ohio 108
- Distributors and wholesalers in Ohio 105
The same list elsewhere in United States
- Corporate groups and holding companies in the United States 2,829
- Corporate groups and holding companies in California 270
- Corporate groups and holding companies in New York State 245
- Corporate groups and holding companies in Texas 238
- Corporate groups and holding companies in Florida 182
- Corporate groups and holding companies in Illinois 154
- Corporate groups and holding companies in Pennsylvania 120
- Corporate groups and holding companies in Georgia 90
- Corporate groups and holding companies in Michigan 90
- Corporate groups and holding companies in Alabama 89
- Corporate groups and holding companies in Massachusetts 87
- Corporate groups and holding companies in New Jersey 79
- Corporate groups and holding companies in Virginia 78
- Corporate groups and holding companies in North Carolina 70
- Corporate groups and holding companies in Tennessee 60
- Corporate groups and holding companies in Wisconsin 60
- Corporate groups and holding companies in Missouri 59
- Corporate groups and holding companies in Minnesota 57
- Corporate groups and holding companies in Indiana 54
- Corporate groups and holding companies in Colorado 52
- Corporate groups and holding companies in New York 152
- Corporate groups and holding companies in Houston 74
- Corporate groups and holding companies in Chicago 64
- Corporate groups and holding companies in Atlanta 47