| # | Company | Employees |
|---|---|---|
| 1 |
Owens Corningowenscorning.com
Global leader in durable, sustainable building products focused on energy efficiency and material innovation to support customer growth. |
11,279 |
| 2 |
ProMedicapromedica.org
A not-for-profit health organization offering acute and ambulatory care, insurance, post-acute services, academic programs, and various healthcare facilities and services |
9,864 |
| 3 |
Marco's Pizza (Marco's Franchising, LLC)marcosfranchising.com
A fast-growing pizza brand founded in 1978, known for high-quality pizza made from scratch dough and fresh cheeses, with over 1,200 locations nationwide |
7,864 |
| 4 |
HCR ManorCarearden-courts.com
A not-for-profit integrated healthcare organization providing short-term, long-term care, memory care, home health, hospice services, with a focus on improving health and well-being |
7,697 |
| 5 |
The University of Toledoutoledo.edu
A state university in Ohio established in 1872, offering various accredited programs and research opportunities to students |
6,836 |
| 6 |
Toledo Public Schoolstps.org
Public school district serving over 22,000 students, focusing on rigorous curriculum and Ohio's New Learning Standards implementation. |
2,958 |
| 7 | 1,659 | |
| 8 |
SSOE Groupssoe.com
Internationally recognized architecture and engineering firm specializing in providing high-quality project solutions for various industries with global reach |
1,634 |
| 9 |
Hylanthylant.com
A leading full-service insurance brokerage with nationwide presence, offering risk management, employee benefits, wellness strategies, insurance solutions for businesses and individuals |
1,329 |
| 10 |
Libbeylibbey.com
Global company redefining fine tabletops with glassware, tableware and flatware, emphasizing beauty, durability, and environmental sustainability to enhance life's moments |
1,286 |
| 11 |
Erie Homeworkaterie.com
Manufacture, supply, and install quality home remodeling products with lifetime warranties and financing, serving customers nationwide since 1976. |
1,143 |
| 12 |
City of Toledotoledo.oh.gov
The organization focuses on enhancing the quality of life for residents, implementing forward-thinking policies, and driving economic development within the city |
966 |
| 13 |
Key Realty LTDexplorekeyrealty.com
A forward-thinking real estate company focused on virtual transactions, providing agents with resources for success in a cost-effective, time-efficient environment |
936 |
| 14 |
Lucas Countyco.lucas.oh.us
The company provides public safety and service programs to residents of Lucas County in compliance with Ohio state laws |
866 |
| 15 |
GRAMMER Americasusa.grammer.com
The company aims to be a global leader in offroad seating and automotive interior components, focusing on innovation and superior product quality |
673 |
| 16 |
Shumaker, Loop & Kendrick, LLPshumaker.com
A leading provider of legal and legislative services with a large team of lawyers, paralegals, and advisors across multiple offices |
669 |
| 17 |
The Toledo Clinictoledoclinic.com
A large multi-specialty physician group in Toledo offering a wide range of medical services including radiology, laboratory, pharmacy, and outpatient surgery |
668 |
| 18 |
Arden Courtsarden-courts.com
Specialized memory care that focuses on providing a safe and nurturing environment, tailored to meet the physical, mental, and social needs of individuals with Alzheimer's or dementia |
662 |
| 19 |
UToledo Healthhealth.utoledo.edu
public research university providing diverse services, flexible work schedules, professional growth opportunities, and a healthy work-life balance |
602 |
| 20 |
GRAMMER Americasgrammer.com
The company is a global leader in offroad seating and automotive interior components, focusing on innovation, quality, safety, comfort, and value for customers |
566 |
| 21 |
Paramount Health Careparamounthealthcare.com
A locally owned health insurance company in Ohio, focused on improving health and well-being through compassion, innovation, teamwork, and excellence |
540 |
| 22 |
Kingston HealthCarekingstonhealthcare.com
Provider of senior living communities across the US, offering independent living, assisted living, skilled nursing, rehabilitation, and memory care services with a focus on employee well-being and growth |
518 |
| 23 |
Renhill Companiesrenhill.com
A staffing firm specializing in educational substitute placements in NW & NE Ohio, as well as providing various staffing solutions for businesses and schools |
484 |
| 24 |
The Toledo Zoo & Aquariumtoledozoo.org
A comprehensive zoological park with over 10,000 animals from 500+ species, showcasing deep sea creatures and animals from Africa to the Arctic |
481 |
| 25 |
Danberry Companydanberry.com
A leading real estate brokerage in Northwest Ohio + Southeast Michigan offering residential, commercial, rental, and property management services with experienced staff and comprehensive training programs |
464 |
| 26 |
Washington Local Schoolswls4kids.org
Provides education to approximately 7,000 students in Toledo, Ohio, through multiple elementary, junior high, and high school campuses within a 17-square-mile district |
458 |
| 27 |
UCBucbinc.com
The company, founded in 1959, offers customized industry-specific solutions with superior service, operating as a family-owned agency with a national presence |
439 |
| 28 |
Harborharbor.org
A leading provider of mental health, substance use treatment, wellness, and vocational services for adults, children, and families in Northwest Ohio |
432 |
| 29 |
The University of Toledo College of Medicine and Life Sciencesutoledo.edu
The University of Toledo College of Medicine and Life Sciences educates clinicians and scientists, provides high-quality patient care, and conducts nationally recognized research |
412 |
| 30 |
Zepf Centerzepfcenter.org
A non-profit organization in Northwest Ohio providing trauma certified behavioral health, vocational services, crisis care, addiction treatment, and career development for individuals with mental illness |
385 |
| 31 |
Job1USAjob1usa.com
Job1USA provides customized employment solutions as a primary sourcing vendor for labor staffing needs, offering individualized recruitment and placement services |
370 |
| 32 |
Tuffy Tire & Auto Servicetuffy.com
A national automotive repair chain with over 100 locations, offering a range of services, training, support, and a commitment to quality service |
370 |
| 33 |
Pathology Laboratories, Inc.pathlabs.org
A reputable independent medical laboratory providing reliable and convenient laboratory testing services with a strong commitment to quality and regulatory compliance |
345 |
| 34 |
FIASUL Indรบstria de Fiosfiasul.com.br
This company is engaged in the textile industry, specifically in the spinning and yarn manufacturing sector |
339 |
| 35 |
Concept Rehab, Incconceptrehab.com
National provider of contract rehabilitation services and business navigation for senior post-acute healthcare providers in the Midwest Also offers management and consulting services |
325 |
| 36 |
UTindependentcollegian.com
The student newspaper of the University of Toledo provides news, sports, life, arts, blogs, editorials, and campus information to enlighten college students |
314 |
| 37 |
Heidtman Steel Companyheidtman.com
Family-owned steel processing company with extensive capabilities and large service center network for 70 years Offers competitive compensation and benefits |
307 |
| 38 |
Unison Healthunisonhealth.org
A nonprofit organization providing accessible and affordable behavioral health care, alcohol and drug treatment services for adults and children with various treatment options |
296 |
| 39 |
Toledo Lucas County Public Librarytoledolibrary.org
A resourceful company offering assistance to small businesses, nonprofits, educators, parents, and adults through outreach programs, educational resources, classes, and eMedia resources |
284 |
| 40 |
Toledo Tool and Dietoledotool.com
Established in 1940, this metal stamping company specializes in serving the automotive industry with secondary processes such as welding, painting, plating, and assembly |
264 |
| 41 |
Go Wireless - Verizon Wireless Premium Retailer
A premium retailer specializing in Verizon Wireless products and services with six locations in Northwest Ohio and SE Michigan, serving consumer and business accounts |
245 |
| 42 |
Harthartinc.com
A brand transformation agency dedicated to moving brands to better places for a better world, emphasizing progress and growth #EveryDayGreater |
233 |
| 43 |
Pittsburgh Corning Corporationowenscorning.com
Global leader in insulation, roofing, and fiberglass composite materials, providing energy-efficient, durable solutions for homes and commercial buildings worldwide |
221 |
| 44 |
TOAST.net Internet Servicetoast.net
An Internet and Managed Services provider offering Cloud Services, Fiber Internet, Website Hosting, Business Email, and Managed Servers for businesses of all sizes |
202 |
| 45 |
Directions Credit Uniondirectionscu.org
A trusted financial institution offering a complete range of services to members, with a focus on personalized guidance, competitive rates, and community involvement |
191 |
| 46 |
Epworth United Methodist Churchepworth.com
The company focuses on making disciples of Jesus Christ, offering care ministries, partnering in positive experiences, building a world-class facility, and investing in reducing poverty |
180 |
| 47 |
Opteon USAopteonusa.com
A leading residential real estate appraisal management company providing prompt, accurate valuation services with over 60 years of combined experience |
173 |
| 48 |
Buckeye CableSystembuckeyebroadband.com
Provider of cable and broadband services, rebranded as Buckeye Broadband Visit our LinkedIn page for news and updates |
169 |
| 49 |
Inverness Clubinvernessclub.com
A nationally recognized club with a rich heritage offering a memorable experience, world-class golf course, and a broad range of amenities for members |
166 |
| 50 |
Genacross Lutheran Servicesgenacrosslutheranservices.org
Genacross Lutheran Services provides senior living, youth and family care, and outpatient services in northwest Ohio and southeast Michigan, focusing on enhancing lives |
162 |
| 51 |
Biopark Educaรงรฃobioparkeducacao.com.br
Biopark Education offers solutions in Education, Training, Development, and Consulting to enhance professional skills and business results through people empowerment |
155 |
| 52 |
RE/MAX Preferred Associatesmetrotoledorealestate.com
A leading real estate brokerage in Northwest Ohio, providing full-service assistance to agents with top market share and a focus on productivity |
150 |
| 53 |
The Bostwick-Braun Companybostwick-braun.com
Wholesale hardware distributor serving retail and commercial customers in the Midwest region since 1855 Employee-owned with a focus on service and integrity |
132 |
| 54 |
Owens Corning FOAMGLASยฎ Industrial Insulationfoamglas.com
A global leader in innovative glass technology for construction, providing high-performance insulation solutions for critical end uses worldwide |
117 |
| 55 |
Toledo Engineering Co., Inc.teco.com
A group with over 90 years of experience provides glass manufacturing industry with furnaces, batch plants, and complete production plants |
84 |
| 56 |
IET, Inc. (Industrial Engineering & Consulting)ieteng.com
An industrial and manufacturing engineering firm offering consulting, hands-on support, and improving clients' competitiveness in various markets with diverse capabilities |
82 |
| 57 |
Double A Solutionsdoubleasolutions.net
An incubator specializing in investing in, developing, and operating innovative software and SaaS products to solve business problems |
68 |
| 58 |
Impact Products, LLCimpact-products.com
Supplier of high-quality and affordable products in nine categories for Jan/San, Foodservice, and Office Products Industries, exceeding customer expectations with exceptional service |
59 |
| 59 |
Stapleton Insurance Groupstapletoninsurance.com
A leading insurance group specializing in property/casualty and employee benefit risk management with personalized, tailored services for long-term clients |
58 |
| 60 |
Bollin Labelbollin.com
Designer and printer of custom and stock labels, specializing in high-impact designs for various products and markets with in-house production capabilities |
42 |
| 61 |
GUSCOgogusco.com
A company dedicated to providing energy efficient solutions to organizations in North America, aiming to reduce energy usage and improve profitability |
29 |
| 62 |
ChempaceChempace.com
A manufacturer of specialty chemicals offering quality products, customer service, and competitive pricing, with a focus on innovative and environmentally friendly solutions |
15 |
| 63 |
KMG Fiduciary Partners, LLCkmgfp.com
Innovative financial planning and asset management firm focused on personalized goals and long-term success as a fiduciary advisor Offering comprehensive, tailored solutions |
14 |
| 64 |
Eidi Propertieseidiproperties.com
A commercial real estate company with over 100 years of experience in acquiring, managing, and leasing shopping centers for long-term growth and success |
6 |
| 65 |
OpenMindd Ecom | An Ecommerce Growth Agencyopenminddecom.com
Specializing in e-commerce strategies, our team helps brands optimize their presence on Amazon, Walmart, Etsy, eBay, and beyond through data-driven results and customer-focused decisions |
2 |
| 66 |
Blitz Sales Softwarenowblitz.com
It provides a centralized platform for managing leads, nurturing sales opportunities, and improving sales strategies through data-driven insights and follow-ups. |
2 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
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 Oct 24, 2026.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668