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Top 64 manufacturers in San Diego

Tamtam tracks 64 manufacturers headquartered in San Diego. This list ranks all of them by number of employees on LinkedIn, led by Qualcomm, General Atomics and Illumina. Their median headcount is 313. Half of them were founded in 1998 or later.

๐Ÿ‡บ๐Ÿ‡ธ San Diego64 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Qualcommqualcomm.com

Providing widespread intelligent computing solutions

Semiconductor Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 57,548 n/a
2
General Atomicsga.com

Development of advanced technology solutions including unmanned aerial vehicles, research reactors, aircraft systems, MagLev transport, and fusion energy for global customers.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 11,213 n/a
3
Illuminaillumina.com

The company develops innovative technologies and assays for genetic analysis, enabling personalized medicine and advancing disease research, drug development, and molecular testing

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 9,673 1998
4
Dexcomdexcom.com

A leader in continuous glucose monitoring technology, empowering individuals with diabetes to control their health and pursue their dreams

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 8,997 1999
5
Solar Turbinessolarturbines.com

Manufacturer of industrial gas turbines, compressors, and generator sets used in oil, gas, and power generation projects globally.

Oil and Gas ๐Ÿ‡บ๐Ÿ‡ธ San Diego 7,656 1927
6
Kratos Defense and Security Solutionskratosdefense.com

National security technologies spanning unmanned systems, hypersonics, satellite communications, cyber defense, and propulsion systems for rapid deployment to support various military domain missions.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 2,950 n/a
7
CareFusionbd.com

Develops market-leading technologies and services for the health care industry; products improve cost and safety of patient care.

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 2,600 2009
8
Cohu, Inc.cohu.com

A global supplier of semiconductor test equipment, handlers, MEMS modules, thermal systems, and automated test equipment, focusing on yield improvement and cost reduction for manufacturers

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 2,084 1947
9
General Dynamics NASSCOjobs.nassco.com

A shipbuilding company with locations on the West and East Coasts specializing in ships for the US Navy and commercial markets, also providing repair services

Shipbuilding ๐Ÿ‡บ๐Ÿ‡ธ San Diego 1,845 1959
10
Kyocera International, Inc. (North America)americas.kyocera.com

A leading provider of high-tech products for consumers and businesses including fine ceramics, semiconductor components, communication equipment, consumer products, and more

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 1,553 1969
11
Pens.compens.com

A global provider of affordable custom promotional products, offering savings, flexibility, and perfect print promise to small businesses worldwide

Advertising Services ๐Ÿ‡บ๐Ÿ‡ธ San Diego 1,537 1966
12
NuVasiveglobusmedical.com

A company focused on providing innovative musculoskeletal procedural solutions and enabling technologies to improve patient care worldwide Visit their website for more information

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 1,409 1997
13
100%100percent.com

A San Diego-based brand producing premium goggles, eyewear, helmets, gloves, and sportswear for motocross, downhill slopes, and BMX racing to inspire a new generation of racers

Retail ๐Ÿ‡บ๐Ÿ‡ธ San Diego 1,318 2012
14
Hyundai Transleadhyundaitranslead.com

A leading manufacturer of dry and refrigerated van trailers, domestic containers, container chassis, and converter dollies for the North American transportation industry

Truck Transportation ๐Ÿ‡บ๐Ÿ‡ธ San Diego 950 1989
15
Kyocera Mobilekyoceramobile.com

A leader in rugged mobility solutions, specializing in waterproof and durable mobile devices with enterprise-grade security and white glove services for business customers

Telecommunications ๐Ÿ‡บ๐Ÿ‡ธ San Diego 924 2000
16
Becton Dickinson Company (Safety Syringes, Inc. )bd.com

A global medical technology company advancing health through improved medical discovery, diagnostics, and care delivery

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 854 n/a
17
Cymercymer.com

A market-leading provider of advanced light sources for chipmakers, pioneering the transition to EUV lithography for smaller, faster chips

Semiconductor Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 826 1986
18
Pulse Electronics Corporationyageogroup.com

Designing and manufacturing passive electronic components like magnetics, antennas, and connectors for communications, computing, industrial, IoT, and transportation sectors.

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 691 1956
19
BioLegendbiolegend.com

Developing cutting-edge antibodies, proteins, and bioassays for biomedical research, offering superior products, customer service, and support Revolutionizing healthcare solutions and technologies globally

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 660 n/a
20
iTECHitecheng.com

Designs, engineers, and manufactures batteries, chargers, and docking stations for medical, handheld electronics, security, and mobile communication markets, focusing on intrinsically safe and smart power.

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 580 1997
21
Ascential Medical & Life Sciences (now includes D&K Engineering)ascentialtech.com

A comprehensive medical and life sciences company accelerating innovation from ideation to manufacturing, with a focus on complex and essential projects

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 528 2000
22
Quidelquidelortho.com

QuidelOrtho develops intelligent diagnostic solutions to transform data into actionable insights, enabling faster responses and a healthier future globally

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 496 n/a
23
Mitsubishi Elevatorsmitsubishielevator.com

Specializing in elevator construction, the organization is located in San Diego, California, United States

Construction ๐Ÿ‡บ๐Ÿ‡ธ San Diego 475 n/a
24
Element Bioscienceselementbiosciences.com

A life science company developing disruptive DNA sequencing and multiomics technology to empower researchers with affordable, high-quality data

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 445 2017
25
Argen Corporationargen.com

Global leader supporting dental laboratories in 105+ countries, committed to laboratory success as a partner rather than a competitor.

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 411 n/a
26
Ceramic Proceramicpro.com

Global leader in nano ceramic protection solutions for vehicles, offering advanced coatings, paint protection films, and window films with a focus on innovation and excellence Trusted by professionals worldwide

Motor Vehicle Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 395 2003
27
Bumble Bee Foodsthebumblebeecompany.com

A 120-year-old fishing company delivering delicious, healthy seafood globally while working towards ocean conservation and sustainability

Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 378 n/a
28
PDPturtlebeach.com

Supplying video game peripherals and accessories globally for over 25 years, promoting community, individuality, and expression for gamers worldwide

Computers and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 355 1990
29
Volcano Corporationvolcanocorp.com

Global leader in intravascular imaging and therapy for coronary and peripheral applications, offering innovative technologies to improve patient outcomes worldwide

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 334 2000
30
Mechanical Engineering Professionals, LLCmechanicalengineeringpros.com

A full-service mechanical engineering design and manufacturing firm specializing in machine design, optics, robotics, medical devices, automation, and nanotechnology

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 328 2007
31
Goldstarsimplygoldstar.com

Award-winning manufacturer and supplier of personalized writing instruments, stationery, and drinkware, offering full-color decoration and all-inclusive pricing to promotional product distributors worldwide

Advertising Services ๐Ÿ‡บ๐Ÿ‡ธ San Diego 325 1970
32
Quantum Designqdusa.com

The company develops and markets automated temperature and magnetic field testing platforms for materials characterization across various scientific fields globally

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 313 1982
33
Rhino Linings Corporationrhinolinings.com

A world leader in sprayed and rolled coatings and linings for industrial, municipal, and residential applications with a global network of applicators

Chemical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 311 1988
34
KICkicthermal.com

The company provides automatic profiling, fixtures, and software solutions for various manufacturing processes, offering Smart Factory solutions for automation and process control

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 311 n/a
35
TriLink BioTechnologies, part of Maravai LifeSciencestrilinkbiotech.com

Global leader, nucleic acid and mRNA solutions, delivering chemical and biological expertise, CDMO services, high-quality materials including patented CleanCap mRNA capping technology for pharmaceutical and biotech.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 250 1996
36
Inova Diagnostics, A Werfen Companyinovadx.com

A leader in autoimmune technologies, Inova Diagnostics develops and manufactures IVD systems and reagents for diagnosis and monitoring of complex disorders worldwide

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 249 1987
37
Calibre Scientific Groupcalibrescientific.com

Global provider of life science products & services for lab research, diagnostics, & biopharmaceuticals through acquisitions & organic growth, serving customers in 175+ countries

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 248 2016
38
Invetechinvetechgroup.com

Global engineering and manufacturing partner for cell and gene therapy, diagnostics, IVD, and medtech companies. Designs, develops, automates, and manufactures products.

Engineering Services ๐Ÿ‡บ๐Ÿ‡ธ San Diego 246 1987
39
Taoglastaoglas.com

Provider of antennas, IoT components, and design services, ensuring seamless connectivity solutions with global engineering resources and a customer-focused approach for innovative RF systems

Telecommunications ๐Ÿ‡บ๐Ÿ‡ธ San Diego 222 n/a
40
Rock West Compositesrockwestcomposites.com

Designs, engineers, and manufactures quality composite products using various techniques, ensuring superior value and customer satisfaction with experienced personnel.

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 209 2009
41
Ballast Point Brewing Companyballastpoint.com

This San Diego-based company is a leader in craft brewing and spirits, known for innovative twists on traditional recipes

Food and Beverage Services ๐Ÿ‡บ๐Ÿ‡ธ San Diego 206 n/a
42
CPG Sorting Technologiescpgrp.com

Leading manufacturer of advanced sorting systems for waste and recycling, including CP Auger Screens and NIR/AI MSS optical sorters, enhancing efficiency and safety.

Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 203 1977
43
Biotixbiotix.com

A global leader in manufacturing laboratory consumables and liquid handling solutions, dedicated to providing innovative products for researchers worldwide

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 202 n/a
44
Whalen Furniturewhalenfurniture.com

A furniture company designing pieces for home, work, and life, focusing on affordability, diverse styles, and customer needs since 1991

Furniture and Home Furnishings Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 186 1991
45
Steren Solutionssterensolutions.com

This company provides innovative electronics connectivity solutions, manufacturing over 3,000 products for broadband, telco, and consumer electronics distributors, ensuring quality and customer satisfaction.

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 162 1956
46
Solar Gard Saint-Gobainsolargard.com

A global producer of advanced window films and protective coatings for architecture and automotive markets, enhancing lives with products that protect, save, and renew

Plastics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 142 n/a
47
InvivoGeninvivogen.com

Specialists in cell culture engineering and innate immunity, providing innovative reagents and tools for cutting-edge research globally

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 130 1977
48
Beam Globalbeamforall.com

Clean technology innovator specializing in sustainable infrastructure products, EV charging solutions, energy storage, and energy security to power transportation and protect the environment

Renewable Energy Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 97 2006
49
Kurin Inc.kurin.com

Privately owned business dedicated to engineering better healthcare through innovative technologies, focusing on reducing false positive blood cultures in hospitals

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 89 n/a
50
Maravai LifeSciencesmaravai.com

Develops and provides nucleic acid products, enzyme development, and biologics safety testing for life sciences companies, supporting research, clinical trials, and commercialization.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 87 2014
51
Diamond Electronicsdiamond-ems.com

Global leader in contract manufacturing specializing in Electronic Manufacturing Solutions for a variety of industries, with a focus on innovation and quality

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 85 2000
52
Space Micro โ€“ Powered by Voyager Spacespacemicro.com

An engineering-driven supplier of radiation-hardened communications, electro-optics, and digital systems for commercial, civil, and military space applications worldwide Based in San Diego, CA

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 84 2002
53
Althea, CMOaltheacmo.com

Contract development and manufacturing organization for process development, drug substance, and drug product manufacturing, including formulation and aseptic fill finish.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 72 1998
54
Nikkiso America, Inc.nikkisoamerica.com

The company provides innovative technologies and products globally, focusing on aerospace, industrial, medical, and precision equipment divisions to meet customer demands

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 65 2006
55
Presidio Components, Inc.presidiocomponents.com

Designs and manufactures ceramic capacitors for demanding applications including space, military, high-temperature, RF, and custom commercial electronics.

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 56 n/a
56
ECORยฎecorglobal.com

Noble Environmental Technologies develops and manufactures sustainable building materials, offering eco-friendly alternatives to traditional materials while promoting a circular economy

Wholesale Building Materials ๐Ÿ‡บ๐Ÿ‡ธ San Diego 52 2006
57
Tubby Todd Bath Co.tubbytodd.com

Creating all-natural body care products for kids and mothers since 2014, this company is dedicated to connecting families and promoting clean fun

Personal Care Product Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 38 2014
58
Custom Cabs Inc.customcabsinc.com

A premier designer, manufacturer, and installer of custom elevators with exotic materials for interior and exterior use, offering complete packages tailored to individual needs

Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 21 1998
59
Wintriss Engineering Corporationweco.com

Innovative technology company specializing in automated surface vision inspection systems for various industries, focused on improving product quality and reducing costs

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 14 1989
60
Biotonebiotone.com

Manufacturer of professional massage oils, cremes, lotions, gels, and spa body products for high quality therapeutic use.

Chemical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 13 n/a
61
California Commercial Asphalt, LLCccallc.com

A joint venture providing asphalt production services with a focus on sustainability, led by an experienced team in the construction industry

Construction ๐Ÿ‡บ๐Ÿ‡ธ San Diego 12 2005
62
Designer Molecules, Inc.designermoleculesinc.com

This company develops innovative chemistries for advanced materials, creating new products for structural technology and providing solutions for various industries worldwide

Chemical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ San Diego 12 2000
63
Grantchester Groupgrantchestergroup.com

Private equity firm investing in healthcare, energy, and industrials with a team of experienced CEO's and Operating Executives from successful companies

Venture Capital and Private Equity Principals ๐Ÿ‡บ๐Ÿ‡ธ San Diego 11 n/a
64
Luna Nortelunanorte.co

A globally recognized jewelry brand blending nature's charm with elegance, celebrating individuality, empowerment, and self-expression through thoughtfully designed pieces

Retail Luxury Goods and Jewelry ๐Ÿ‡บ๐Ÿ‡ธ San Diego 10 2014

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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 2, 2026.

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