| # | Company | Employees |
|---|---|---|
| 1 |
Allied Universalaus.com
Provides tailored security and facility services using smart technology, supporting diverse sectors with local leadership and community presence. |
104,797 |
| 2 |
Taco Belltacobell.com
This company operates as a global Mexican-inspired quick service restaurant brand, with thousands of locations serving millions of customers weekly, part of a major restaurant group. |
83,421 |
| 3 |
Aloricaalorica.com
Alorica provides world-class customer service and support for various industries, with a focus on creating great experiences for clients and employees globally |
70,920 |
| 4 |
Ingram Microingrammicro.com
Global technology company distributing IT products and services, offering AI-powered platform, financing, marketing, lifecycle management, and technical support. |
29,469 |
| 5 |
LA Fitnesslafitness.com
A privately owned fitness club chain with state-of-the-art clubs in US and Canada, focusing on enhancing members' wellbeing through innovative workout options |
15,166 |
| 6 | 14,695 | |
| 7 |
Arbonnearbonne.com
A company that creates premium skincare and wellness products with botanical ingredients, focusing on purity, safety, and effectiveness, distributed through Independent Consultants worldwide |
14,306 |
| 8 |
Edwards Lifesciencesedwards.com
Develops breakthrough structural heart technologies and medical devices for patients, partnering with clinicians to improve lives globally across over 100 countries. |
14,148 |
| 9 |
In-N-Out Burgerin-n-out.com
Privately owned fast food chain serving high-quality, fresh, made-to-order burgers in a clean environment with friendly service. |
14,130 |
| 10 |
Riviancareers.rivian.com
Innovative team dedicated to challenging conventional thinking and seeking new solutions to protect the outdoors for future generations |
11,979 |
| 11 |
Comfort Keeperscomfortkeepers.com
Provider of compassionate in-home senior care for over 20 years, focusing on Interactive Caregivingโข and Elevating the Human Spirit through dedicated, trained professionals |
9,649 |
| 12 |
Toshibatoshiba.com
A global technology company focusing on energy, infrastructure, electronics, and digital solutions to create a sustainable future for generations to come |
8,787 |
| 13 |
TP-Linktp-link.com
Global provider of reliable networking devices and smart home products, enhancing connectivity and serving customers in over 170 countries. |
8,604 |
| 14 |
Entrepreneur Mediaentrepreneur.com
Provides resources and events to empower visionary leaders and entrepreneurs to develop innovative ideas, businesses, and impactful viewpoints. |
8,269 |
| 15 |
Alliant Insurance Servicesalliant.com
Provides innovative insurance brokerage and consulting services, supporting diverse clients with expert teams to help grow businesses and communities. |
6,616 |
| 16 |
Club Pilatesclubpilates.com
This company offers franchise opportunities to make Pilates accessible to more people, providing strength-training workouts at any age and fitness level |
5,998 |
| 17 |
Blizzard Entertainmentcareers.blizzard.com
development and publishing of popular, high-quality video games with iconic universes like Warcraft, Overwatch, Diablo, and StarCraft |
5,975 |
| 18 |
loanDepotloandepot.com
A digital commerce company revolutionizing the mortgage industry, offering lending and real estate services to simplify home ownership |
5,727 |
| 19 |
Skyworks Solutions, Inc.skyworksinc.com
Design and manufacture of innovative analog semiconductors enabling wireless connectivity across aerospace, automotive, broadband, cellular, medical, military, and consumer electronics markets. |
5,672 |
| 20 |
CoreLogiccotality.com
The company provides data, analytics, and platforms to help people find, buy, and protect homes, enabling a seamless home-ownership journey |
4,926 |
| 21 |
Tillystillys.com
Specialty retailer offering casual apparel, footwear, and accessories for young men, women, boys, and girls with diverse brand assortment. |
4,638 |
| 22 |
Kia Americakia.com
A technology-rich product lineup of cars, SUVs, and alternative-powered vehicles with an industry-leading warranty program Headquarters in Irvine, California |
4,487 |
| 23 |
Panasonic Avionics Corporationpanasonic.aero
Global leader in providing innovative and customized inflight entertainment and communication solutions to over 300 airlines worldwide |
4,028 |
| 24 |
Restaurant365restaurant365.com
cloud-based platform for restaurant accounting, inventory, workforce management, payroll, and integrations to optimize operations and improve guest experiences |
3,986 |
| 25 |
CorVel Corporationcorvel.com
A nationally recognized claims management and managed care provider with 30 years of experience offering risk management solutions for better outcomes |
3,838 |
| 26 |
Pure Barrepurebarre.com
A leading barre franchise with innovative techniques focusing on strength, cardio, and flexibility through a range of class offerings and online streaming services |
3,800 |
| 27 |
Masimomasimo.com
Develops and manufactures innovative noninvasive patient monitoring technologies and sensors to improve clinical decision-making and patient safety worldwide. |
3,667 |
| 28 |
International Education Corporationieccolleges.com
An employee-owned company offering career training programs in healthcare, business, technology, trades, and criminal justice with comprehensive benefits and tuition discounts |
3,010 |
| 29 |
Golden State Foodsgoldenstatefoods.com
A global supplier to the foodservice industry, specializing in liquid products, protein, produce, dairy, and more, with a strong focus on quality and customer service |
2,877 |
| 30 |
Montage Internationalmontageinternational.com
Luxury hospitality management with ultra-luxury hotels, new luxury resorts, residences, and premier golf courses in diverse and exclusive destinations worldwide |
2,833 |
| 31 |
Ingram Micro Commerce & Lifecycle Servicesshipwire.com
Global logistics provider offering supply chain solutions connecting people, products, and providers worldwide through a vast workforce and extensive network |
2,770 |
| 32 |
St. Joseph Healthprovidence.org
Healthcare organization undergoing a transition to the Providence name Stay connected for workplace culture, caregiver stories, and hiring information |
2,747 |
| 33 |
Ventura Foodsventurafoods.com
A leading foodservice company providing high-quality food solutions with a diverse portfolio of beloved brands, custom products, and global reach |
2,719 |
| 34 |
Boot Barnbootbarn.com
Nation's largest retailer of western and work wear, offering cowboy boots, work boots, western wear, outdoor gear, and supporting local communities |
2,656 |
| 35 |
Irvine Unified School Districtiusd.org
The Irvine Unified School District in Orange County, California provides comprehensive education to over 35,000 TK-12 students through innovative programs and community partnerships |
2,522 |
| 36 |
Allergan Aesthetics, an AbbVie Companyglobal.allerganaesthetics.com
Develop, manufacture, and market a portfolio of leading aesthetics products including facial injectables, body contouring, plastics, and skin care. |
2,456 |
| 37 |
West Coast Universitywestcoastuniversity.edu
Provides higher education through various programs like nursing, healthcare, and business, utilizing modern technology and simulation centers for accessible learning. |
2,349 |
| 38 |
Drybardrybar.com
Specializing in blowouts, we offer salon services at 125+ locations nationwide and products for the perfect blowout at home Peace, love & blowouts! |
2,322 |
| 39 |
Alteryxalteryx.com
This company provides an Analytics Automation Platform that simplifies data processes, enabling organizations globally to democratize data analytics and achieve high-impact outcomes |
2,310 |
| 40 |
Salas O'Briensalasobrien.com
Employee-owned engineering firm focused on advancing the human experience through the built environment Top-ranked, with a strong emphasis on impact and sustainability |
2,295 |
| 41 |
StretchLab Franchisestretchlab.com
A California-based company offering one-on-one and group stretching services to increase mobility, reduce pain, and enhance quality of life in a fun, communal environment |
2,272 |
| 42 |
Mazda North American Operationsmazdausa.com
Design, manufacture, and sell vehicles worldwide, focusing on driver experience, combining tradition, versatility, refinement, and power. |
2,251 |
| 43 |
Habit Burger & Grillhabitburger.com
A subsidiary of Yum! Brands, Inc, The Habit Burger Grill has been dedicated to serving quality made-to-order food for over 50 years |
2,239 |
| 44 |
Glidewell Dentalglidewelldental.com
Pioneering digital dentistry innovations, offering comprehensive, cost-effective clinical solutions, combining open digital workflows, AI-powered manufacturing, and vertically integrated operations to empower dental professionals. |
2,238 |
| 45 |
Revelystrevelyst.com
Innovative maker brands pushing boundaries and setting new standards for outdoor products and experiences |
2,194 |
| 46 |
Razer Inc.careers.razer.com
A global lifestyle brand for gamers, offering a wide range of gaming hardware, software, and services, with a strong presence in the esports community |
1,924 |
| 47 |
Discovery Behavioral Healthdiscoverybehavioralhealth.com
This company operates treatment centers providing mental health, eating disorder, and addiction services for children, teens, and adults in various levels of care |
1,920 |
| 48 |
Accurate Backgroundaccurate.com
Global provider of employment background screening and workforce monitoring services, ensuring smarter hiring decisions with comprehensive technology, extensive coverage, and intuitive compliance tools |
1,899 |
| 49 |
Budget Blindsfranchise.budgetblinds.com
Provider of high quality window coverings to consumers through convenient, complimentary in-home consultations at affordable prices since 1992 |
1,891 |
| 50 |
GIShireright.com
Established in 1966, this company provides background screening services to a variety of industries, helping organizations hire, engage, and verify employees, volunteers, and contractors |
1,863 |
| 51 |
Oakmont Senior Livingoakmontseniorliving.com
A leader in managing senior living communities, offering advancement opportunities, a close-knit community, and excellent care for seniors in California and Nevada |
1,825 |
| 52 |
ADEC Innovationsadec-innovations.com
ADEC Innovations offers integrated industry expertise, data management, and software services to meet ESG needs, improve sustainability performance, and drive operational efficiencies globally |
1,801 |
| 53 |
iHerbch.iherb.com
A dedicated team committed to making health and wellness accessible for all through a curated selection of products and a positive culture |
1,795 |
| 54 |
Hyundai Capital Americahyundaicapitalamerica.com
Provides auto financing, leasing, and protection plans for Hyundai, Genesis, and Kia customers and dealerships across the United States. |
1,724 |
| 55 |
Easterseals Southern Californiasocal.easterseals.com
The company provides essential services and supports for people with disabilities, including early childhood programs, autism services, and employment programs |
1,656 |
| 56 |
Advanced Sterilization Productsasp.com
Global leader providing advanced products, technologies, and workflows for medical sterilization and disinfection, dedicated to defending lives of patients and healthcare workers. |
1,532 |
| 57 |
Silveradosilverado.com
Providing memory care centers and hospice care nationwide, Silverado's founders prioritize the same high standard of care for all families |
1,516 |
| 58 |
Tri Pointe Homestripointehomes.com
builds premium homes and communities across 10 states, combining national resources with local expertise and strong community ties |
1,505 |
| 59 |
West Capital Lendingwestcapitallending.com
High-performing mortgage originators transitioned to wholesale channel for greater loan control, improved products, and revenue retention Supportive environment with marketing and efficient processing |
1,460 |
| 60 |
CycleBarcyclebar.com
CycleBar offers immersive indoor cycling workouts for all fitness levels in state-of-the-art CycleTheaters with rhythm-based classes led by trained instructors |
1,451 |
| 61 |
Trace3trace3.com
Consulting on, integrating, and operating data, security, and cloud solutions to drive business transformation and create measurable value for clients |
1,440 |
| 62 |
Kofaxtungstenautomation.com
It is a leader in intelligent workflow automation, serving thousands of customers globally, with a strong commitment to innovation and efficiency. |
1,437 |
| 63 |
Irvine Valley Collegeivc.edu
Small college environment, modern facilities, dedicated staff, excellent faculty. Knowledge, experience, student learning commitment. #1 transfer rate Orange County, #2 transfer rate California. |
1,423 |
| 64 |
YogaSixyogasix.com
This company offers energizing, empowering, and fun yoga classes with a focus on accessibility and individualized practice for a modernized experience |
1,363 |
| 65 |
JAE Electronicsjae.com
Develops and manufactures electronic components, user interface devices, and aerospace electronics, offering cutting-edge solutions for various applications since 1953. |
1,334 |
| 66 |
University of Massachusetts Globalumassglobal.edu
A fully online university offering over 65 degrees, tailored for working adults, with a focus on career advancement and workplace relevance |
1,318 |
| 67 |
Advantmedadvantmed.com
A healthcare information management company offering solutions to optimize revenue and quality outcomes for health plans and Managed Care Organizations |
1,294 |
| 68 |
City of Irvinecityofirvine.org
A nationally recognized city known for safety, education, business opportunities, environmental stewardship, and diversity, offering a high quality of life |
1,199 |
| 69 |
Qcells North Americaqcells.com
Global provider of complete energy solutions in solar cell and module, energy storage, project business, and energy retail, serving utility, commercial, governmental, and residential markets worldwide |
1,175 |
| 70 |
VIZIOexertis.com
An Orange County-based company delivering immersive entertainment experiences through smart TVs, sound bars, and an integrated platform for content distribution and targeted advertising |
1,132 |
| 71 |
UC Irvine School of Medicinemedschool.uci.edu
Advancing medical research, educating diverse health professionals, and providing patient-centered healthcare through clinical, teaching, and research programs in Orange County. |
1,119 |
| 72 |
Concordia University Irvinecui.edu
Non-profit Lutheran university offering undergraduate, graduate, and doctoral programs in education, nursing, theology, business, and athletics administration. |
1,102 |
| 73 |
JAMSjamsadr.com
JAMS provides efficient, impartial dispute resolution services globally, with industry-specific experience, top-notch facilities, and highly trained panelists for optimal outcomes |
1,097 |
| 74 |
Local Corporationlocalcorporation.com
A leading local search and advertising technology company that aggregates and curates personalized content for millions of consumers, providing value to advertisers and partners |
1,059 |
| 75 |
BSH Home Appliances Corporation - North Americabsh-group.com
Manufacturing and marketing high-quality Bosch, Thermador, Gaggenau home appliances across North America through various retail and distribution channels. |
1,040 |
| 76 |
Private Access, Inc.privateaccess.com
Developing web applications to solve privacy issues in medical research, facilitating secure sharing of confidential records & accelerating research with dynamic electronic consent management |
1,031 |
| 77 |
Smart Energy Watersew.ai
The company provides AI-powered platforms for the energy and utilities industry to enhance customer and workforce experiences while promoting energy and water conservation |
1,012 |
| 78 |
Shimanobike.shimano.com
The company promotes health and happiness by encouraging people to enjoy nature and the world around them |
1,008 |
| 79 |
Prudential Real Estatehsfaffiliates.com
Irvine-based firm operates Berkshire Hathaway HomeServices and Real Living Real Estate franchise networks, under HomeServices of America, a Berkshire Hathaway affiliate |
985 |
| 80 |
3 Day Blinds3dayblinds.com
A leading manufacturer and retailer of custom window coverings in the US, offering a wide range of fashionable products and expert design advice |
918 |
| 81 |
Alliance HealthCare Servicesakumin.com
Healthcare services company acquired by Akumin, focusing on diagnostic imaging and outpatient healthcare services across multiple locations. |
906 |
| 82 |
Caylentcaylent.com
Cloud native services provider helping organizations optimize people and technology with AWS, enabling innovation and ambitious ideas to thrive |
899 |
| 83 |
Champions Group Holdingschampionsgroupholdings.com
A company in the home services industry focused on building relationships with employees, partners, and clients, and partnering with top businesses |
888 |
| 84 |
K1 Speedk1speed.com
K1 Speed is a leading indoor karting company in America, offering electric go kart racing, entertainment venues, and event hosting services nationwide |
877 |
| 85 |
Pendry Hotels & Resortspendry.com
Luxury hospitality brand with unique properties in various cities, combining design, culture, service, and local community focus for today's world traveler |
858 |
| 86 |
Kimco Staffing Services, Inc.kimco.com
A trusted staffing agency offering office, accounting, technical, industrial, and call center placements with over 30 years of award-winning service |
857 |
| 87 |
Trading Academytradingacademy.com
A global leader in financial education based in Irvine, California, offering professional training in trading and investing across various asset classes |
847 |
| 88 |
Mountain Mike's Pizza, LLCmountainmikespizza.com
A popular pizza chain on the West Coast offering crispy pepperoni pizza, large specialty pizzas, wings, salad, desserts, beer, and wine Franchise opportunities available |
846 |
| 89 |
Trinity Property Consultantstrinity-pm.com
Shaping community environments and refining living spaces since 1999, with a focus on customer satisfaction through transparency, customer service, and technology |
844 |
| 90 |
Center for Discoverycenterfordiscovery.com
Specialized residential and outpatient treatment for adults and teens with eating disorders, mental health issues, and substance abuse problems, prioritizing personalized care and comfort |
830 |
| 91 |
ASICS America Corporationasics.com
A company dedicated to designing advanced footwear and athletic products, promoting a diverse and inclusive culture with a focus on work-life balance and community |
828 |
| 92 |
Kura Sushi USAkurasushi.com
A pioneer in revolving sushi dining with over 600 locations, offering a unique experience with premium ingredients, advanced technology, and natural dishes |
817 |
| 93 |
NTrustntrustinfotech.com
Real estate lease administration solution provider offering advanced CRE software platforms and technical/back office services to international and domestic companies of all sizes |
814 |
| 94 |
Pacific Premier Bankcolumbiabank.com
A leading financial institution offering deposit and loan products for businesses and consumers nationwide, with expertise in various market sectors |
804 |
| 95 |
Neudesic, an IBM Companyneudesic.com
Trusted technology partner specializing in digital modernization, custom application development, managed services, and business software products for impactful business results |
800 |
| 96 |
Shimmick Corporationshimmick.com
A leading heavy civil infrastructure company delivering high-quality projects nationwide, specializing in water, transportation, transit, foundations, and construction services |
797 |
| 97 |
Zillow Home Loans, LLCzillow.com
A national provider of online mortgage lending services with best-in-class service, local market expertise, and transparent communication at every step |
794 |
| 98 |
Wienerschnitzelwienerschnitzelfranchise.com
Established in 1961 by John Galardi, this company is a leader in the quick-service food industry, serving over 120 million hot dogs yearly with a renowned chili recipe |
783 |
| 99 |
Americoramericor.com
Provides debt relief services using a proprietary platform to help individuals and families develop strategies for a debt-free lifestyle. |
772 |
| 100 |
GLOVIS America, Inc.glovisusa.com
A leading third party logistics provider specializing in vehicle and parts logistics, offering tailored strategies, advanced technologies, and total logistics services in the US and Canadian markets |
763 |
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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 Oct 24, 2026.
More company lists in Irvine
- SaaS companies in Irvine 41
- IT Services and IT Consulting companies in Irvine 37
- Software Development companies in Irvine 35
- Financial Services companies in Irvine 30
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- Retail chains in Irvine 27
- Real Estate companies in Irvine 26
- IT services companies in Irvine 26
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
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- The largest companies in Maryland 1,527
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