This selection of companies in New Hampshire highlights a mix of well-established mid-sized to large firms, with a strong presence in technology, manufacturing, and services. Planet Fitness, for example, is a fast-growing fitness franchisor, while Connection provides tailored IT services. Timberland is a global leader in footwear and apparel, and Skillsoft specializes in AI-native skills management for businesses. Bottomline simplifies complex payment workflows, and Allegro MicroSystems is a leader in power and sensing solutions.
A notable pattern is the concentration of headquarters in New Hampshire towns like Hampton, Merrimack, Stratham, Nashua, Portsmouth, Manchester, and Londonderry, indicating a diverse geographical spread within the state rather than a single urban hub. The companies also span a broad range of founding dates, from Albany International Corp. established in 1895 to I-SEC Security founded in 2005, showcasing a blend of legacy and newer enterprises.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Planet Fitnessplanetfitness.com
A fast-growing fitness franchisor with over 2,400 locations, dedicated to providing affordable, high-quality fitness experiences in a Judgement Free Zone庐 |
18,335 | |||
| 2 |
Transaviatransavia.com
An airline with 50 years of experience flying passengers to over 160 destinations, offering easy booking, various fare options, and dedicated services for business travelers |
5,275 | |||
| 3 |
Connectionconnection.com
Deliver tailored IT services and advanced technology solutions to businesses, enterprises, and governments across multiple industries worldwide. |
3,993 | |||
| 4 |
Timberlandtimberland.com
A global leader in footwear and apparel, encouraging employees to embrace adventure and sustainability, offering perks for outdoor activities and career growth opportunities |
3,927 | |||
| 5 |
Skillsoftskillsoft.com
Global leader AI-native skills management for human + AI era. Unifying learning, real-time skills intelligence, workforce insights, building Skillforce to drive business outcomes. |
3,160 | |||
| 6 |
Bottomlinebottomline.com
Simplifying complex payment workflows, reducing fraud risk, and driving operational efficiency with secure, scalable, innovative solutions for businesses and financial institutions. |
2,951 | |||
| 7 |
Allegro MicroSystemsallegromicro.com
A global leader in power and sensing solutions for motion control and energy-efficient systems, driving breakthrough advancements in various industries |
2,882 | |||
| 8 | 2,691 | ||||
| 9 |
Albany International Corp.albint.com
Global producer of custom fabrics for paper and nonwovens, supplier of advanced composite aerospace parts including fan blades and cases. |
2,584 | |||
| 10 |
Altra Industrial Motionaltramotion.com
Designing, producing motion control and power transmission solutions for equipment speed, torque, positioning, and other functions, solving complex customer challenges worldwide. |
2,238 | |||
| 11 |
Sitecoresitecore.com
The company provides digital experience software SaaS solution for brands to create memorable customer interactions |
1,745 | |||
| 12 |
HMSHost Internationalhmshost.work
A global restaurateur specializing in operating hospitality outlets in travel venues worldwide, offering international brands and regional concepts to over 900 million customers annually |
1,466 | |||
| 13 |
I-SEC Securityi-sec.com
A global provider of advanced aviation security services including consulting, handling, training, and developing cost-effective security solutions for clients |
1,376 | |||
| 14 |
Hypertherm Associateshyperthermassociates.com
A US manufacturer of industrial cutting products and software, delivering solutions that shape the future for businesses worldwide |
1,316 | |||
| 15 | 1,315 | ||||
| 16 |
CAMP Systems International, Inc.campsystems.com
Industry-leading aircraft maintenance and regulatory compliance management solution, offering a suite of services for fixed and rotor wing aircraft globally |
1,153 | |||
| 17 |
Velcro Companiesvelcro.com
Global organization providing innovative fastening solutions with over 60 years of experience, owning 400+ patents and global manufacturing locations |
1,117 | |||
| 18 |
Standex Internationalstandex.com
A global industrials company with market-leading brands serving electronics, engraving, and specialty technology industries, advancing vital sectors like electric vehicles and solar technology |
1,112 | |||
| 19 |
Carpet One Floor & Homecarpetone.com
North America's top floor covering retailer with over 1,000 locations offering a wide selection of flooring options and expert installation services |
1,081 | |||
| 20 |
Laborielaborie.com
A world-class medical company specializing in diagnostic equipment and supplies for Urology, Gastroenterology, Gynecology, Obstetrics, and Neonatology, making a positive impact globally |
1,068 | |||
| 21 |
Resoneticsresonetics.com
Develops and manufactures precision components for medical devices, partnering with R&D teams from prototype to production-scale manufacturing with global facilities. |
1,067 | |||
| 22 |
Nordson MEDICALnordsonmedical.com
Global expert in designing, developing, and manufacturing complex medical devices and component technologies, serving interventional, surgical, and specialized markets with innovative solutions |
1,014 | |||
| 23 |
Levi9 Technology Serviceslevi9.com
A technology service partner in the Netherlands, offering digital product development, software scaling, and complex platform building with a customer-centric approach and industry expertise |
967 | |||
| 24 |
Service Credit Unionservicecu.org
Member-owned financial cooperative offering banking services across multiple states and Germany, focusing on member well-being and community support. |
925 | |||
| 25 |
Parallel Wirelessparallelwireless.com
Leading disruptive software company revolutionizing wireless network deployment with open, secure, and intelligent RAN architecture for global MNOs |
824 | |||
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 |
KAS BANKcaceis.com
Specialized asset servicing banking group providing a comprehensive range of services across Europe, North America, and Asia to financial institutions and corporate clients |
816 | |||
| 27 |
Eprediaepredia.com
A global precision cancer diagnostics company, providing groundbreaking technologies to improve patient outcomes in the battle against cancer |
737 | |||
| 28 |
Global Technical Talent, an Inc. 5000 Companygttit.com
A subsidiary of Chenega Corporation providing Total Talent Solutions, Global staffing, RPO, and Digital talent services to Fortune 500 clients |
614 | |||
| 29 |
TURBOCAM Internationalturbocam.com
A leader in turbomachinery manufacturing, producing prototype and production parts with advanced machining capabilities, specializing in integrally-bladed parts for aerospace engines |
558 | |||
| 30 |
Hitchiner Manufacturinghitchiner.com
A leading supplier of complex investment castings and finished subassemblies for automotive, aerospace, and other industries worldwide, utilizing cutting-edge technology and robotics |
541 | |||
| 31 |
GlobalSignglobalsign.com
The company provides trusted identity and security solutions for businesses, enterprises, cloud providers, and IoT innovators to secure online communications |
511 | |||
| 32 |
Sprague Operating Resources LLCspragueenergy.com
A leading independent supplier of energy and materials handling services in the Northeast, offering products like home heating oil, diesel, gasoline, and natural gas |
508 | |||
| 33 |
Loftwareloftware.com
Provides software for product identification, ensuring businesses manage labeling across their supply chain, saving money, reducing risk, and avoiding production delays. |
500 | |||
| 34 |
Symetri USAsymetri.us
A technology consulting firm providing technical services for planning, design, construction, operations, and maintenance of land and buildings for large-scale projects |
492 | |||
| 35 |
Integrated Deicing Services, LLCinlandgroup.aero
Provider of aircraft deicing and anti-icing services using the largest fleet of forced-air trucks, operating at over 35 airport locations globally |
487 | |||
| 36 |
RiverStonetrg.com
Specializing in risk management solutions for insurers and reinsurers, providing run-off claims resolution, reinsurance recovery, and dispute resolution on a global scale |
462 | |||
| 37 |
Goss Internationalgossinternational.com
Supplier of automated web offset presses for various printing applications, headquartered in Durham, NH with manufacturing centers in North America, Asia, and Europe |
432 | |||
| 38 |
PlaneSense, Inc.planesense.com
Leaders in fractional aircraft ownership providing worry-free private jet ownership, cost-effective travel solutions, and maximum freedom of movement for owners |
389 | |||
| 39 |
iCADicadmed.com
Using AI, we empower healthcare providers to detect cancer more accurately and quickly, optimizing patient outcomes with proven technologies |
363 | |||
| 40 |
KBACE, A Cognizant Companycognizant.com
Specializing in Oracle Cloud Software, the company helps businesses modernize and simplify their digital systems by offering full-service solutions and deep industry expertise |
359 | |||
| 41 |
Health Dialogcarenethealthcare.com
Providing integrated population health services including member engagement, health coaching, medication support, and decision-making tools for healthcare organizations. |
325 | |||
| 42 |
Anvil International (INACTIVE)asc-es.com
A unified company focusing on delivering service excellence through precision-engineered products, support, and knowledge, ultimately striving for customer success |
322 | |||
| 43 |
Grassroot Soccergrassrootsoccer.org
An adolescent health organization that uses soccer to educate and mentor young people in over 60 countries, reaching 18 million adolescents since 2002 |
312 | |||
| 44 |
Avantiumavantium.com
Commercialization of technologies converting biomass and CO2 into sustainable materials, including plant-based sugars for FDCA production and advanced catalysis products and services. |
306 | |||
| 45 |
Standex Engravingmold-tech.com
Global supplier specializing in mold texturing, surface finishes, and tooling for manufacturing products; part of a diversified global manufacturing corporation |
296 | |||
| 46 | 290 | ||||
| 47 |
Galviongalvion.com
The company specializes in designing and delivering purpose-built solutions for military and tactical missions, enhancing agility and survivability for end-users |
257 | |||
| 48 |
ElectroCraftelectrocraft.com
Specializing in custom manufacturing of AC, DC, and stepper motors, gearboxes, drives, and linear actuators for industrial, commercial, and consumer markets |
240 | |||
| 49 |
Safran Defense & Space, Inc. Optronicssafran-dsi.com
Global leader designing and producing high-performance electro-optics and navigation systems for defense and civil applications, including laser rangefinders, targeting solutions, and custom OEM solutions |
173 | |||
| 50 |
Synergetics - A Worldwide Resource For Business Problem Solvingsynergeticsww.com
A respected global management consulting firm partnering with companies to drive growth, enhance performance, and create sustainable improvements in efficiencies and profitability |
119 | |||
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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 14, 2026.
More company lists in New Hampshire
- The largest companies in New Hampshire 448
- Manufacturers in New Hampshire 62
- Companies with in-house R&D in New Hampshire 50
- Critical infrastructure operators in New Hampshire 39
- Hardware manufacturers in New Hampshire 39
- Education providers in New Hampshire 38
- Hospitals and Health Care companies in New Hampshire 36
- Healthcare providers in New Hampshire 35
- Contract manufacturers in New Hampshire 30
- Professional services firms in New Hampshire 26
- IT Services and IT Consulting companies in New Hampshire 25
The same list elsewhere in United States
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- Multinational companies in Florida 897
- Multinational companies in Illinois 830
- Multinational companies in Massachusetts 637
- Multinational companies in New Jersey 623
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- Multinational companies in Pennsylvania 472
- Multinational companies in Michigan 467
- Multinational companies in Alabama 428
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- Multinational companies in North Carolina 358
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