This list comprises large multinational companies based in Illinois, with a notable concentration in the Chicago metropolitan area. Key sectors represented include healthcare, food and beverage, real estate, and finance. Many of these firms have a long-standing presence, with some founded in the late 19th or early 20th century.
Featured companies include McDonald's, a global fast-food chain; Walgreens Boots Alliance, an integrated healthcare and retail company; Abbott, a global healthcare leader in diagnostics and medical devices; and JLL, a professional services firm specializing in real estate. Other prominent firms are Mondel膿z International, a global snack manufacturer, and United Airlines, a major airline.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
McDonald'scorporate.mcdonalds.com
global fast-food restaurant chain operating over 37,000 locations worldwide, serving popular menu items and employing 1.9 million people |
261,219 | |||
| 2 |
Walgreens Boots Alliancewalgreens.com
Integrated healthcare and retail company operating thousands of pharmacy locations, providing medicines, health services, beauty products, and digital convenience globally. |
141,576 | |||
| 3 |
Abbottabbott.com
A global healthcare leader offering life-changing technologies in diagnostics, medical devices, nutrition, and generic medicines, with over 115,000 colleagues serving in 160+ countries |
140,778 | |||
| 4 | 104,899 | ||||
| 5 | 84,541 | ||||
| 6 |
Mondel膿z Internationalmondelezinternational.com
Global multinational manufacturing and marketing iconic snacks, biscuits, chocolate, candy, and gum brands including Oreo and Cadbury to empower people to snack right. |
79,000 | |||
| 7 |
United Airlinesunited.com
Leading airline with over 90,000 employees focused on customer service, sustainability, and teamwork, currently hiring 15,000 new team members in 2023 |
75,520 | |||
| 8 |
AbbVieabbvie.com
Global biopharmaceutical company focused on creating impactful medicines for complex health issues in immunology, oncology, neuroscience, eye care, aesthetics, and other unmet needs |
61,015 | |||
| 9 |
GE HealthCaregehealthcare.com
Global medical technology and digital solutions innovator leveraging intelligent devices, data analytics, and artificial intelligence to drive precision health and improve patient outcomes worldwide |
60,041 | |||
| 10 |
John Deeredeere.com
A global leader in cutting-edge products and technology for agriculture and construction, pushing boundaries for productivity and sustainability worldwide |
55,618 | |||
| 11 |
Allstateallstate.com
This company advocates for peace of mind, builds diverse teams, develops careers, and empowers people and communities through innovation and advocacy |
55,012 | |||
| 12 |
Cushman & Wakefieldcushmanwakefield.com
Global commercial real estate services provider with 52,000 professionals focused on advancing client, colleague, and community outcomes worldwide. |
53,000 | |||
| 13 |
Gallaghergallagher.com
Global insurance brokerage offering risk management, consulting, employee benefits, claims management, and retirement services to protect assets and support clients. |
52,767 | |||
| 14 | 42,789 | ||||
| 15 | 41,201 | ||||
| 16 |
Baxter International Inc.baxter.com
Development and delivery of innovative medical technologies and solutions to support clinicians and improve patient health worldwide. |
39,170 | |||
| 17 |
Kraft Heinzkraftheinz.com
Producer of high-quality food and beverage products including condiments, dairy, meals, beverages, and nutrition items marketed worldwide. |
39,000 | |||
| 18 |
Northern Trustnortherntrust.com
Global provider of innovative wealth management, asset servicing, and investment solutions for institutions, families, and individuals through diverse technology and financial expertise. |
30,965 | |||
| 19 |
NielsenIQnielseniq.com
A leading consumer intelligence company offering comprehensive consumer insights, advanced analytics, and global retail data to drive growth opportunities |
29,989 | |||
| 20 | 29,010 | ||||
| 21 |
Motorola Solutionsmotorolasolutions.com
The company builds and connects technologies to enhance public safety collaboration for safer communities, schools, hospitals, and businesses worldwide |
28,153 | |||
| 22 |
Discover Financial Servicesdiscover.com
Provider of lending products and payment services enabling merchants, fintech companies, and consumers to access financial solutions and global card acceptance. |
21,937 | |||
| 23 | 21,907 | ||||
| 24 | 21,618 | ||||
| 25 |
RSM US LLPrsmus.com
Provider of assurance, tax, and consulting services focused on middle market clients with a global presence and professional development culture. |
19,700 | |||
| 26 |
Ace Hardware Corporationacehardware.com
Largest retailer-owned hardware cooperative, operating over 5,800 locally owned and operated stores globally. Provides distribution and support to independent hardware retailers. |
19,460 | |||
| 27 |
Medlinemedline.com
Provides medical-surgical products and supply chain solutions to healthcare providers globally, improving their clinical, financial, and operational outcomes. |
18,809 | |||
| 28 | 18,732 | ||||
| 29 |
ITWcareers.itw.com
Global multi-industrial manufacturing leader driving solid growth with innovative solutions, emphasizing decentralized culture |
18,709 | |||
| 30 |
University of Chicagouchicago.edu
A prestigious academic institution encouraging scholars and students to think critically, explore various disciplines, and challenge conventional ideas for global enrichment |
18,526 | |||
| 31 |
Hyatt Regencyregency.hyatt.com
Hyatt Regency hotels offer seamless connections for business and leisure travelers in over 30 countries, ensuring enthusiastic service and attention to detail |
17,551 | |||
| 32 |
Motorola Mobility (a Lenovo Company)motorola.com
Innovative smartphones and accessories are created by a global team, fostering collaboration, creativity, and a commitment to consumer-centric mobile technology innovation |
17,456 | |||
| 33 |
TransUniontransunion.com
Global information and insights company enabling trust and confident transactions by providing actionable, data-driven pictures of individuals for businesses and consumers worldwide |
17,036 | |||
| 34 |
Northwestern Universitynorthwestern.edu
Premier research university offering innovative teaching, pioneering research, and diverse, collaborative environments across multiple campuses near Chicago and Qatar. |
16,997 | |||
| 35 |
HUB Internationalhubinternational.com
Advises businesses and individuals on insurance, risk management, employee benefits, retirement, and wealth management with tailored solutions. |
16,129 | |||
| 36 | 14,810 | ||||
| 37 |
UL Solutionsul.com
Global provider of safety testing, certification, inspection, auditing, and advisory services ensuring product security, sustainability, and market trust. |
14,487 | |||
| 38 |
Nalco Water, An Ecolab Companyecolab.com
A global leader in water and process management solutions, leveraging connected chemistry and digital innovation to optimize sustainability and business outcomes |
12,751 | |||
| 39 |
Thoughtworksthoughtworks.com
A global technology consultancy specializing in strategy, design, and engineering to drive digital innovation, fostering diverse talent and a strong cultivation culture |
12,735 | |||
| 40 |
Molson Coors Beverage Companymolsoncoors.com
Global producer of beer, energy drinks, and canned cocktails including brands like Miller Lite and Blue Moon while promoting responsible alcohol consumption. |
12,299 | |||
| 41 |
Morningstarmorningstar.com
Independent investment insights, data, and research for various global markets including managed products, private capital, debt securities, and comprehensive asset management services. |
12,028 | |||
| 42 |
Baker McKenziebakermckenzie.com
Provide practical legal advice combining local knowledge and international expertise to help businesses succeed across global markets. |
11,895 | |||
| 43 |
Zebra Technologieszebra.com
Improving workflows through innovative technology solutions, connecting frontline workers and optimizing visibility with scanning, track-and-trace, and automation tools |
11,698 | |||
| 44 | 11,608 | ||||
| 45 |
Grant Thornton (US)grantthornton.com
Provides independent audit, tax, and advisory services through a global network, focusing on quality, trust, and strong client relationships. |
11,518 | |||
| 46 |
Encoreencoreglobal.com
Global leader in event technology and production services, specializing in creating engaging experiences for hybrid, virtual, and in-person events worldwide Operating in 17+ countries |
10,625 | |||
| 47 |
Baker Tilly USbakertilly.com
A leading advisory CPA firm with a coast-to-coast and global presence, part of Baker Tilly International network with 43,000 professionals |
10,594 | |||
| 48 |
Grouponjob-boards.eu.greenhouse.io
An experiences marketplace offering local deals, live events, and travel options, helping people discover new experiences while assisting businesses in growing |
10,452 | |||
| 49 |
Internationalinternational.com
Manufacture durable trucks, engines, and buses with aftermarket parts, focusing on uptime, productivity, and sustainable mobility solutions. |
10,420 | |||
| 50 |
Claire'sclaires.com
Retail and wholesale provider of fashion accessories and jewelry, inspiring self-expression and unique style across North America and internationally. |
9,895 | |||
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. | |||||
| 51 | 9,411 | ||||
| 52 |
Brunswick Corporationbrunswick.com
Global leader in marine recreation offering propulsion systems, boats, marine technology, parts, accessories, and related services worldwide. |
9,409 | |||
| 53 |
Zurich North Americazurichna.com
Provider of insurance solutions and services to businesses and individuals across various industries, including Fortune 500 companies. |
9,359 | |||
| 54 |
Komatsu North Americakomatsu.com
This company specializes in providing technologies, equipment, and services for construction, mining, forklift, industrial, and forestry markets worldwide to enhance safety and promote productivity |
9,252 | |||
| 55 |
Pampered Chefpamperedchef.com
Development and sales of unique, high-quality kitchen tools, cookware, and pantry products through independent consultants and ecommerce. |
9,039 | |||
| 56 |
Rotary Internationalrotary.org
Global network of leaders and volunteers uniting to create lasting positive change in communities worldwide through service and engagement. |
8,787 | |||
| 57 |
Kirkland & Elliskirkland.com
Providing top-tier legal services in corporate transactions, litigation, investigations, and asset management with global reach and innovative approach. |
8,683 | |||
| 58 |
YASH Technologiesyash.com
Consulting-led digital transformation partner offering technology, advisory, and outsourcing services to optimize client performance and revenue growth globally. |
8,670 | |||
| 59 |
LKQ Corporationlkqcorp.com
Largest provider of alternative collision, recycled, and remanufactured auto parts, plus specialty aftermarket equipment and accessories across multiple countries. |
8,450 | |||
| 60 |
Afni, Inc.afni.com
Global contact center team providing prompt customer service on various devices Offering channel strategies and solutions to build profitable customer relationships |
8,044 | |||
| 61 | 7,968 | ||||
| 62 |
Conagra Brandsconagrabrands.com
Diverse team managing iconic and emerging food brands with a focus on innovation, integrity, and consistent business results. |
7,846 | |||
| 63 |
Transdev North Americatransdevna.com
Provides safe, reliable, and innovative transportation services including bus, rail, paratransit, autonomous vehicles, and maintenance across 45 US states. |
7,841 | |||
| 64 |
Reyes Holdingsreyesholdings.com
Global food and beverage products distribution, including beer, spirits, quick-service restaurant supplies, and Coca-Cola brands, serving 200+ locations worldwide. |
7,649 | |||
| 65 |
Kearneykearney.com
Global consulting firm with a focus on people, strategic operations, and building the future through teamwork and hands-on expertise in over 40 countries |
7,559 | |||
| 66 |
CNA Insurancecna.com
Provides commercial property and casualty insurance products and services for businesses and professionals across the U.S., Canada, and Europe. |
7,473 | |||
| 67 |
Loyola University Chicagoluc.edu
Private Jesuit Catholic university offering diverse undergraduate, graduate, and professional programs across multiple campuses including Chicago and Rome. |
7,315 | |||
| 68 |
SP+ (SP Plus)spplus.com
The company specializes in developing technology and operations management solutions for efficient movement of people, vehicles, and personal belongings |
7,185 | |||
| 69 |
Convergintconvergint.com
Global systems integrator delivering results through unparalleled service excellence in electronic security, cybersecurity, fire safety, building automation, and audio-visual systems |
7,151 | |||
| 70 |
Gallagher Bassettgallagherbassett.com
Provider of claims and risk management services, offering consulting, technical support, and innovative solutions across global insurance sectors. |
6,826 | |||
| 71 |
Leo Burnettleoburnett.com
Global communications agency combining creativity, data, and technology to influence human behavior and drive client prosperity worldwide. |
6,825 | |||
| 72 |
SGKsgkinc.com
Global packaging and brand experience company delivering solutions for brands to speak louder, scale faster, and grow stronger, with 6,500 employees worldwide |
6,821 | |||
| 73 |
Stericyclelinktr.ee
A leading compliance company providing essential services for proper disposal of medical waste and confidential information, protecting client relationships and the environment |
6,777 | |||
| 74 |
Crate & Barrelcrateandbarrel.com
Leading home furnishings specialty retailer, offering curated products and custom delivery, with physical stores and online platforms across multiple brands globally. |
6,531 | |||
| 75 |
Huronhuronconsultinggroup.com
A global professional services firm specializing in strategy creation, operations optimization, digital transformation, and empowering businesses for sustainable results |
6,453 | |||
| 76 |
AARaarcorp.com
Global provider of aviation services to commercial and government markets, offering aftermarket expertise, aviation services, MRO, parts supply, integrated solutions, and manufacturing capabilities |
6,341 | |||
| 77 |
Dover Corporationdovercorporation.com
A global manufacturer and solutions provider delivering innovative equipment, components, and digital solutions across various industries with operational agility and entrepreneurial approach |
6,338 | |||
| 78 |
Accenture Strategy & Consultingaccenture.com
Combines deep industry expertise with advanced analytics and human-led design methodologies to help global clients act with speed and confidence throughout operations. |
6,217 | |||
| 79 |
Circanacircana.com
A company advising on consumer behavior complexity using advanced technology and analytics to help brands and retailers unlock business growth |
6,212 | |||
| 80 |
Kellanovakellanova.com
A global powerhouse in snacks, cereal, noodles, and frozen foods, committed to creating better days and promoting sustainable access to food |
6,197 | |||
| 81 |
Flex-N-Gateflex-n-gate.com
A leading provider of high-quality automotive products and systems, specializing in aftermarket and OEM parts with a focus on continuous improvement and on-time delivery |
6,096 | |||
| 82 |
Great Wolf Lodgegreatwolf.com
Indoor water park resorts offering family entertainment, dining, retail, and career growth opportunities with exceptional service and fun environment. |
6,083 | |||
| 83 |
Uber Freightuberfreight.com
Provides technology-driven freight transportation solutions connecting shippers and carriers to optimize logistics and improve supply chain efficiency. |
6,012 | |||
| 84 | 5,752 | ||||
| 85 |
Starcomstarcomww.com
A global leader in communications planning and media, focused on putting people at the center to inspire and drive business forward through data and technology |
5,691 | |||
| 86 |
CEScesltd.com
Providing technology and business process modernization services including digital transformation, enterprise applications, managed IT, cloud, renewables, and cybersecurity solutions. |
5,562 | |||
| 87 |
Continental Airlinesunited.com
A major US airline formed through a merger in 2010, offering a global route network, modern fleet, loyalty program, and airport hubs |
5,439 | |||
| 88 |
Ferraraferrarausa.com
A leading sugar confectionery company in the US, focused on driving category development with a diverse portfolio of iconic brands |
5,430 | |||
| 89 |
Breakthru Beverage Groupbreakthrubev.com
Family-owned beverage wholesaler distributing premier spirits, wine, beer, and non-alcoholic brands across North American retail and hospitality markets. |
5,424 | |||
| 90 |
ACCO Brandsaccobrands.com
Design, market, and sell branded consumer products that enhance productivity, confidence, and enjoyment in work, learning, and play worldwide. |
5,322 | |||
| 91 |
Littelfuselittelfuse.com
A global industrial technology manufacturing company providing innovative solutions for industrial, transportation, and electronics markets with a commitment to diversity and equal employment opportunities |
5,181 | |||
| 92 |
Combined, a Chubb Benefits Companycombinedinsurance.com
Provider of supplemental accident, health, and life insurance products focused on affordable, clear, and easy-to-understand coverage for families. |
5,177 | |||
| 93 |
Sidley Austin LLPsidley.com
Providing comprehensive legal services worldwide, specializing in complex transactions, restructuring, investigations, regulatory, and litigation matters across multiple industries. |
5,113 | |||
| 94 |
James Hardiejameshardie.com
Global leader in high-performance fiber cement and fiber gypsum building solutions, empowering homeowners and professionals worldwide with premium quality products for design and protection |
5,022 | |||
| 95 |
Lions Clubs Internationallionsclubs.org
Provide vision and health screenings, build parks, support eye hospitals, award scholarships, assist youth, and aid disaster relief worldwide. |
4,994 | |||
| 96 |
EVERSANAeversana.com
Provider of global services to the life sciences industry, focusing on the patient experience and delivering value throughout the product life cycle Serving 650+ organizations |
4,836 | |||
| 97 |
CME Groupcmegroup.com
Global derivatives marketplace offering benchmark products across asset classes through electronic trading platforms and central counterparty clearing services for diverse financial risk management. |
4,781 | |||
| 98 |
Panduitpanduit.com
The company provides innovative electrical and network infrastructure solutions, serving as a trusted advisor in Data Center, Enterprise, and Industrial environments |
4,640 | |||
| 99 |
The Walsh Group - Walsh Construction & Archer Westernwalshgroup.com
Family-owned construction company specializing in design, build, finance, operation across building, civil, transportation sectors with skilled workforce. |
4,597 | |||
| 100 |
Ryan Specialtyryanspecialty.com
International specialty insurance firm providing underwriting, product development, administration, risk management, and wholesale brokerage services for brokers and carriers. |
4,562 | |||
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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 Nov 11, 2026.
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The same list elsewhere in United States
- Multinational companies in the United States 16,197
- Multinational companies in California 2,592
- Multinational companies in New York State 2,216
- Multinational companies in Texas 1,418
- Multinational companies in Florida 897
- Multinational companies in Massachusetts 637
- Multinational companies in New Jersey 624
- Multinational companies in Georgia 521
- Multinational companies in Pennsylvania 472
- Multinational companies in Michigan 468
- Multinational companies in Alabama 416
- Multinational companies in Virginia 396
- Multinational companies in Ohio 390
- Multinational companies in North Carolina 358
- Multinational companies in Washington State 288
- Multinational companies in Colorado 228
- Multinational companies in Minnesota 224
- Multinational companies in New York 1,836
- Multinational companies in San Francisco 446
- Multinational companies in Houston 402
- Multinational companies in Chicago 366
- Multinational companies in Miami 289
- Multinational companies in Atlanta 252
- Multinational companies in Boston 241