Automotive manufacturers and suppliers headquartered in Wisconsin (2026 list)

This selection of large companies in Wisconsin primarily consists of manufacturers in the automotive and industrial equipment sectors. Many are well-established, with founding dates stretching back to the early 20th century. Notable examples include Harley-Davidson Motor Company, known for its iconic motorcycles, and Oshkosh Corporation, which designs industrial equipment. Clarios specializes in advanced energy storage solutions, while Modine Manufacturing Company provides thermal technology for vehicles.

A significant concentration of these companies, such as Harley-Davidson Motor Company and Strattec Security Corporation, are headquartered in Milwaukee. Other key locations include Oshkosh, home to Oshkosh Corporation and Oshkosh Defense, and Stoughton, where Nelson Global and Stoughton Trailers, LLC are based. This pattern suggests a strong regional presence for industrial manufacturing, particularly in the automotive supply chain.

#	Company	Industry	Headquarters	Employees	Founded
1	Harley-Davidson Motor Company harley-davidson.com Manufacturing iconic motorcycles embodying adventure and freedom, fostering a unique lifestyle brand with a focus on innovation and culture.	Motor Vehicle Manufacturing	🇺🇸 Milwaukee	11,289	1903
2	Oshkosh Corporation oshkoshcorp.com Design and manufacture advanced industrial equipment using electrification, autonomy, AI, and connectivity for tough jobs worldwide.	Motor Vehicle Manufacturing	🇺🇸 Oshkosh	7,170	1917
3	Clarios clarios.com Global leader in advanced energy storage solutions, producing 150 million batteries annually for a third of the world's vehicles Expanding capacity to meet future demand	Motor Vehicle Parts Manufacturing	🇺🇸 Glendale	6,268	n/a
4	Modine Manufacturing Company modine.com This company specializes in innovative thermal technology, providing customized heating and cooling solutions for vehicle and commercial equipment manufacturers since 1916	Manufacturing	🇺🇸 Racine	3,466	1916
5	REV Group, Inc revgroup.com Specialty vehicle designer and manufacturer, offering customized solutions for fire & emergency, commercial, and recreational applications to a diverse customer base in the United States	Motor Vehicle Manufacturing	🇺🇸 Brookfield	2,380	2010
6	KMC kmcstampings.com Established in 1908, this company specializes in manufacturing custom and standard metal products for global OEMs with a focus on quality and innovation	Manufacturing	🇺🇸 Port Washington	2,091	1908
7	Oshkosh Defense oshkoshdefense.com Design, production, and sustainment of heavy, medium, and light military vehicles plus mobility systems with global logistics and life cycle fleet support.	Defense and Space Manufacturing	🇺🇸 Oshkosh	1,610	1917
8	Waupaca Foundry waupacafoundry.com The company is a leading producer of high-quality iron castings, utilizing vertical green sand molding and generations of expertise for durable and innovative products	Mining	🇺🇸 Waupaca	1,534	1871
9	Pierce Manufacturing piercemfg.com Leading North American manufacturer of custom fire apparatus including pumpers, aerials, rescue trucks, wildland trucks, and tankers Part of Oshkosh Corporation Website: wwwpiercemfgcom	Motor Vehicle Manufacturing	🇺🇸 Appleton	1,422	1913
10	Nelson Global nelsongp.com Engineering and manufacturing air, fluid transfer, NVH, structural, acoustic, and thermal management solutions for leading global OEMs.	Industrial Machinery Manufacturing	🇺🇸 Stoughton	1,286	1939
11	MEC (Mayville Engineering Company, Inc.)mecinc.com A leading manufacturing partner specializing in prototyping, fabrication, coating, assembly, and aftermarket components for various industries Operating across 20 facilities in seven states	Industrial Machinery Manufacturing	🇺🇸 Mayville	1,130	1945
12	Husco husco.com Family-owned company with 75 years of experience designing hydraulic and electro-mechanical control systems for Automotive and Off-Highway equipment Globally recognized for innovation and employee excellence	Industrial Machinery Manufacturing	🇺🇸 Waukesha	896	1985
13	Stoughton Trailers, LLC stoughtontrailers.com A family-owned company in Wisconsin that designs, manufactures, and markets semi-truck trailers and specialty transportation equipment, offering build, finance, rental, and fleet management solutions	Truck Transportation	🇺🇸 Stoughton	773	1961
14	Strattec Security Corporation strattec.com A global leader in automotive security products, specializing in locks, keys, access control systems, and aftermarket support for customers worldwide	Motor Vehicle Manufacturing	🇺🇸 Milwaukee	687	1908
15	ACS - Engineer. Integrate. Build.acscm.com ACS designs, engineers, and builds innovative equipment, machines, controls, and facilities for industry leaders in automotive, aerospace, and manufacturing sectors globally	Construction	🇺🇸 Verona	496	1994
16	Aebi Schmidt USA aebi-schmidt.com Global leader in providing intelligent solutions for clean and safe infrastructure, challenging terrains, and agricultural needs through a wide range of high-quality equipment and services	Machinery Manufacturing	🇺🇸 Chilton	401	n/a
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17	GO Riteway Transportation Group goriteway.com Transportation solutions provider offering a range of vehicles for various occasions and long-term partnerships with institutions, companies, schools, and airport services	Ground Passenger Transportation	🇺🇸 Oak Creek	365	1957
18	Lamers Bus Lines golamers.com Providing safe, affordable school bus and motor coach transportation services across Wisconsin and the Midwest since 1944.	Truck Transportation	🇺🇸 Green Bay	365	1944
19	Signicast Investment Castings signicast.com Provider of commercial investment castings, delivering quality products with unmatched speed and customer focus, resulting in faster time to market and lower total costs	Manufacturing	🇺🇸 Hartford	349	1959
20	Seats Inc.seatsinc.com Manufacturer of specialty seating for transportation, off-highway, and industrial equipment, serving various industries with OEM and contract manufacturing services	Manufacturing	🇺🇸 Reedsburg	331	1952
21	Strattec Security Corporation - México strattec.com A leading provider of innovative security solutions for the automotive industry, offering high-quality products like advanced key systems, access control products, and electronic locks	Motor Vehicle Parts Manufacturing	🇺🇸 Milwaukee	315	1908
22	Madison-Kipp Corporation madison-kipp.com An established aluminum die casting company with expertise in design, die casting, machining, and assembly for automotive and other commercial markets	Motor Vehicle Manufacturing	🇺🇸 Madison	311	1898
23	ETE REMAN etereman.com A leading remanufacturer of automatic transmissions for import and domestic cars & trucks, with over 30 years of experience based in Milwaukee, WI	Motor Vehicle Manufacturing	🇺🇸 Milwaukee	282	1985
24	Wells Vehicle Electronics wellsve.com A leading global provider of advanced vehicle electronics solutions for original equipment and replacement applications in various industries around the world	Motor Vehicle Manufacturing	🇺🇸 Fond du Lac	266	1903
25	J.W. Speaker Corporation jwspeaker.com A company specializing in innovative and high-quality vehicle lighting solutions for OEM and aftermarket customers, driven by a dedication to excellence and value	Appliances, Electrical, and Electronics Manufacturing	🇺🇸 Germantown	265	1935
26	Ritus Corporation ritus.com Specializing in custom-molded products for automotive, industrial, marine, and recreational markets, offering a wide range of rubber and plastic molding services	Plastics Manufacturing	🇺🇸 Milwaukee	119	1963
27	Saelens LLC diamondprecision.com Manufacturer of precision machined components and CNC contract machining services for commercial and industrial applications, with over three decades of experience	Motor Vehicle Manufacturing	🇺🇸 Johnson Creek	63	1974
28	AAA Sales & Engineering aaase.com A precision machining company founded in 1968, providing high-quality products for transportation industries with full-service capabilities, global supply chain, and certifications for quality and environmental standards	Machinery Manufacturing	🇺🇸 Oak Creek	59	1968
29	Vision Plastics, Inc.visionplastics.net Vision Plastics provides high-quality plastic injection molded parts to various industries, offering design engineering assistance, mold maintenance, secondary operations, and quality assurance solutions	Plastics Manufacturing	🇺🇸 Delavan	40	1997
30	A&J Mobility aandjmobility.com The company specializes in providing innovative mobility solutions with a focus on superior service and customer satisfaction, fulfilling automotive mobility dreams since 1983	Motor Vehicle Manufacturing	🇺🇸 Valders	28	1975
31	Orchid Monroe orchidinternational.com Supplier of electro-magnetic stampings and drive assemblies for various industries, offering advanced processes, turnkey product integration, design services, and innovative engineering solutions	Motor Vehicle Manufacturing	🇺🇸 Monroe	25	n/a
32	RevTech Manufacturing revtechmfg.com Specializing in plastic product development, injection molding, automotive parts, sporting goods, electronics housings, two-shot molding, and color matched parts with over 20 years experience	Plastics Manufacturing	🇺🇸 Kenosha	7	2003
33	Bay Fabrication Inc.bayfabrication.com A global supplier of custom insulation products for OEMs, specializing in thermal insulation for industrial, commercial, and automotive markets	Wholesale Building Materials	🇺🇸 Green Bay	3	n/a

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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 12, 2026.

Automotive manufacturers and suppliers headquartered in Wisconsin

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