List of companies with in-house R&D in Oklahoma (2026 list)

These Oklahoma companies with in-house R&D are primarily large organizations, with a strong presence in higher education and the oil and gas sector. Oklahoma State University and the University of Oklahoma, both established in 1890, are significant employers, alongside H&P, a provider of advanced drilling technologies, and Paycom, a payroll and HR software company. Other notable firms include T.D. Williamson, which offers solutions for pipeline operators, and Zeeco, Inc., a leader in combustion and environmental solutions.

A clear pattern among these companies is the prevalence of the oil and gas industry, particularly in Tulsa, which is home to H&P, T.D. Williamson, Zeeco, and John Zink. Additionally, the presence of major universities like Oklahoma State University and the University of Oklahoma highlights a strong foundation in research and development within the state.

#	Company	Industry	Headquarters	Employees	Founded
1	Oklahoma State University go.okstate.edu Delivering education, research, and community engagement in alignment with a land-grant mission for over a century	Higher Education	🇺🇸 Stillwater	13,451	1890
2	University of Oklahoma ou.edu A top public university attracting students nationally and internationally, offering a private college atmosphere, academic excellence, and a wide range of fields of study	Higher Education	🇺🇸 Norman	11,872	1890
3	H&P helmerichpayne.com Provider of advanced drilling technologies and solutions enhancing productivity, reliability, safety, and efficiency in land, international, and offshore operations.	Oil and Gas	🇺🇸 Tulsa	11,576	1920
4	Paycom paycom.com A payroll and HR software company simplifying employee life and transforming business processes with innovative technology and award-winning team	Software Development	🇺🇸 Oklahoma City	5,731	1998
5	T.D. Williamson tdwilliamson.com The company provides innovative solutions for pipeline operators worldwide to maximize uptime, improve throughput, minimize risk, and address regulatory climate challenges	Oil and Gas	🇺🇸 Tulsa	1,872	1920
6	Zeeco, Inc.zeeco.com A global leader in combustion and environmental solutions for various industries, specializing in ultra-low emission burners, flaring systems, and waste incineration	Oil and Gas	🇺🇸 Tulsa	1,812	1979
7	AAON, Inc.aaon.com Innovative company advancing the HVAC industry with customizable solutions for commercial and industrial spaces, focusing on design, manufacturing, and testing	Machinery Manufacturing	🇺🇸 Tulsa	1,654	1988
8	NORDAM nordam.com A global aerospace company specializing in designing, manufacturing, and maintaining propulsion systems, aircraft structures, and transparencies for business and military markets	Aviation and Aerospace Component Manufacturing	🇺🇸 Tulsa	1,637	1969
9	Oklahoma Heart Hospital okheart.com A physician-owned hospital in Oklahoma, designed by cardiologists to provide expert, individualized care with utmost comfort in a digital environment	Hospitals and Health Care	🇺🇸 Oklahoma City	1,354	2002
10	Nortek Air Solutions, LLC nortekair.com Leading HVAC manufacturer in North America providing custom solutions for industrial air handling, cleanroom systems, and mission critical technology with extensive experience and facilities	Machinery Manufacturing	🇺🇸 Okarche	1,305	1977
11	Chickasaw Nation Industries, Inc.chickasaw.com Operating subsidiaries for federal government and commercial clients, offering solutions in various sectors, supporting Chickasaw Nation economic development.	Government Relations Services	🇺🇸 Norman	1,095	1996
12	Oklahoma Children's Hospital OU Health ouhealth.com Innovative children's healthcare provider at OU Health, providing advanced research and treatments through hospital and outpatient services	Hospitals and Health Care	🇺🇸 Oklahoma City	999	n/a
13	John Zink johnzink.com Global leader in environmental solutions for various industries, specializing in engineered vapor and combustion systems with Smart Combustion™ technology for optimized performance and efficiency	Oil and Gas	🇺🇸 Tulsa	869	n/a
14	ATC atcreman.com A global leader in remanufacturing solutions for powertrain and drivetrain products for vehicles of all types, offering engineering services worldwide	Motor Vehicle Parts Manufacturing	🇺🇸 Oklahoma City	727	n/a
15	Webco Industries webcotube.com A leading manufacturer and distributor of steel tubing, founded in 1969, with locations in Oklahoma, Texas, and Pennsylvania Specializing in various types of steel tubing	Oil, Gas, and Mining	🇺🇸 Sand Springs	699	1969
16	Thru Tubing Solutions thrutubing.com Specializing in downhole operations, we offer specialized equipment and services for optimal results in shale regions worldwide, available 24/7	Oil and Gas	🇺🇸 Newcastle	549	1997
17	Kimray, Inc kimray.com A manufacturer based in Oklahoma City creating oil and gas control equipment since 1948 Specializing in temperature, level, flow, and pressure control solutions	Oil and Gas	🇺🇸 Oklahoma City	532	1948
18	The Bama Companies, Inc bama.com Supplier of hand-held pies, biscuits, buns, pie shells, and pizza crusts to major restaurant chains worldwide with custom oven-ready products.	Food and Beverage Services	🇺🇸 Tulsa	486	1925
19	AMETEK MRO ametekmro.com Global provider of third-party MRO services for commercial, regional, and general aviation Specializing in repair and overhaul services with various approvals	Aviation and Aerospace Component Manufacturing	🇺🇸 Tulsa	481	n/a
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20	OU Health Stephenson Cancer Center ouhealth.com A nationally recognized academic cancer center in Oklahoma conducting innovative research and providing top-notch patient care in collaboration with leading organizations	Hospitals and Health Care	🇺🇸 Oklahoma City	465	2011
21	Summit ESP summitesp.com A service provider offering integrated Electric Submersible Pumping systems to optimize production, reduce costs, and increase profitability in the artificial lift industry	Oil and Gas	🇺🇸 Tulsa	448	2012
22	BS&B Safety Systems bsbsystems.com Global leader in non-reclosing pressure relief devices, setting industry standards with innovative products and services to protect personnel and equipment worldwide	Industrial Machinery Manufacturing	🇺🇸 Tulsa	442	n/a
23	Page Not Active - H&P Technologies hpinc.com A division of H&P, find us on LinkedIn under the handle @Helmerich-Payne for more information	Oil and Gas	🇺🇸 Tulsa	431	n/a
24	OU Health Campus Graduate College graduate.ouhsc.edu Networking platform for currently enrolled students and alumni of The University of Oklahoma Health Sciences Center Graduate College to connect and stay updated on activities	Higher Education	🇺🇸 Oklahoma City	361	n/a
25	Jasco Products byjasco.com Jasco designs and develops innovative home automation, lighting, security, entertainment, power, and mobility products for global distribution through major retailers and online platforms	Computers and Electronics Manufacturing	🇺🇸 Oklahoma City	361	1975
26	PCI Energy Solutions pcienergysolutions.com A team of experts creates software solutions for power generation companies, optimizing efficiency, reducing costs, and promoting a cleaner energy future	Software Development	🇺🇸 Norman	358	1992
27	McElroy Manufacturing, Inc.mcelroy.com Established in 1954, this company specializes in engineering and manufacturing fusion equipment for thermoplastic pipes, leading the industry with technological advancements	Machinery Manufacturing	🇺🇸 Tulsa	335	1954
28	MIRATECH miratechcorp.com Industry leader providing emission and acoustical solutions for engines, helping customers meet regulatory requirements while reducing emissions complexity Engineered for performance and quality	Environmental Services	🇺🇸 Tulsa	325	1992
29	Enovation Controls enovationcontrols.com Innovator of electronic controls and displays, providing customized solutions for engines, engine-driven equipment, and specialty vehicles across diverse markets globally.	Appliances, Electrical, and Electronics Manufacturing	🇺🇸 Tulsa	265	1939
30	Noble Research Institute noble.org A company dedicated to promoting regenerative ranching principles to transform grazing lands and benefit the environment while supporting producers' bottom line	Non-profit Organizations	🇺🇸 Ardmore	262	1945
31	Wolverine Tube, Inc.wlv.com A global leader in innovative heat transfer solutions, specializing in thermal management products for various industries worldwide with a focus on energy efficiency and tailored customer solutions	Mining	🇺🇸 Shawnee	187	1916
32	Mercer Valve Co., Inc.mercervalve.net A company focused on delivering high-quality pressure relief valves with patented technology, competitive pricing, timely delivery, and professional services	Oil and Gas	🇺🇸 Oklahoma City	186	1985
33	Field Aerospace fieldaero.com Field Aerospace in Oklahoma City offers aircraft modifications, maintenance, project management, and integration services for special mission aircraft and avionics systems	Aviation and Aerospace Component Manufacturing	🇺🇸 Oklahoma City	143	2015
34	Da/Pro Rubber, Inc.daprorubber.com Specializing in molding high-quality components since 1960, providing expert assistance in rubber, plastic, and TPE molding with ISO-certified facilities	Plastics and Rubber Product Manufacturing	🇺🇸 Broken Arrow	124	1961
35	DMI International, LLC.dmiinternational.com Manufacturer and supplier of construction and maintenance equipment for the pipeline industry, offering quality products, engineering expertise, and world class service globally	Oil and Gas	🇺🇸 Tulsa	53	1977
36	Walvoil Fluid Power USA walvoilusa.com Global manufacturer of hydraulic valves, pumps, motors, and mechatronic systems for various industries, providing integrated hydraulic and electronic solutions for major OEMs worldwide	Industrial Machinery Manufacturing	🇺🇸 Tulsa	43	1969
37	SISU Energy and Environmental sisu-ee.com A solutions-driven partner specializing in emissions reduction, retrofit optimization, field service, waste heat recovery, renewables, and distributed energy for sustainable projects	Energy Technology	🇺🇸 Tulsa	35	2015
38	CMI ROADBUILDING INC.cmi-roadbuilding.com A heavy equipment manufacturing company specializing in road building, construction, and waste management Offers products for compaction, paving, and recycling	Machinery Manufacturing	🇺🇸 Oklahoma City	33	n/a
39	Ascend Beyond Space ascendbeyond.space Democratizing end-of-life management and disposal of satellites with a complete and accessible ecosystem for sustainable space debris solutions.	Defense and Space Manufacturing	🇺🇸 Annecy	4	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 11, 2026.

List of companies with in-house R&D in Oklahoma

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