| # | Company | Employees |
|---|---|---|
| 1 |
Ovintivovintiv.com
A leading North American energy producer focused on developing oil, natural gas liquids, and natural gas producing plays with innovative strategies |
2,878 |
| 2 |
Liberty Energylinktr.ee
A leading North American oilfield services provider offering innovative completion services and technologies for onshore oil and gas exploration and production |
2,546 |
| 3 |
SM Energy Companysm-energy.com
An independent energy company focused on exploration, development, and production of natural gas and crude oil in the United States, prioritizing ethical business practices and community support |
2,255 |
| 4 |
DCP Midstreamdcpmidstream.com
An innovative energy company based in Denver, providing midstream logistics services in over 10 states Emphasizes employee development and competitive benefits |
1,446 |
| 5 |
Antero Resourcesanteroresources.com
An independent E&P company focused on exploiting, developing, and acquiring natural gas, NGLs, and oil properties in the Appalachia Basin |
634 |
| 6 |
MarkWest Energy Partners, L.P.mplx.com
A master limited partnership engaged in gathering, processing, and transporting natural gas, natural gas liquids, and crude oil in various regions of the United States |
579 |
| 7 |
IFS Energy & Resourcesifs.com
A global provider of software and data solutions for oil, gas, mining industries, with a focus on diversity, inclusion, and employee growth |
425 |
| 8 |
BKV Corporationbkv.com
A Denver-based energy company focused on natural gas production with a commitment to achieving net zero emissions by 2025 |
385 |
| 9 |
QEP Resourcesqepres.com
A leading independent crude oil and natural gas exploration and production company, focused on the Permian Basin and Williston Basin in the US |
351 |
| 10 |
PDC Energy, Inc.chevron.com
Independent exploration and production company focused on responsible development of natural resources in key oil and gas regions, striving for sustainable growth and shareholder value |
276 |
| 11 |
Civitas Resourcescivitasresources.com
A company with operational expertise in the energy industry, focusing on sustainability and delivering value to local economies and neighbors |
267 |
| 12 |
Kodiak Oil & Gas Corpkodiakog.com
An independent exploration and production company based in Denver, focusing on oil and natural gas exploration in the US Rocky Mountain region |
232 |
| 13 |
Discovery Natural Resources LLCdiscoverynr.com
A domestic onshore exploration and production company with over 1,000 wells in operation in Texas |
203 |
| 14 |
TransMontaigne Partners LLCtransmontaignepartners.com
A leading provider of terminaling, storage, and transportation services to the energy industry with a network of midstream terminals across the US |
176 |
| 15 |
Anschutz Exploration Corporationanschutzexploration.com
Oil & energy company based in Denver, Colorado, USA, specializing in exploration and production activities in the energy sector |
161 |
| 16 |
Forest Oil Corporationforestoil.com
A company involved in exploring, acquiring, developing, and marketing natural gas and crude oil in North America and select international locations Headquarters in Denver |
146 |
| 17 |
Bill Barrett Corporationbillbarrettcorp.com
A company in the Rocky Mountain region operating in natural gas and oil exploration and development, focusing on high-return assets |
110 |
| 18 |
RockPile Energy Servicesrockpileenergy.com
Innovative completion services for fracturing with focus on Proppant Transportation and Chemical Optimization, reducing pad size, chemical costs, and carbon footprint |
104 |
| 19 |
Bison Oil & Gas IV, LLCbisonog.com
A leading exploration and production company in the DJ Basin and Rocky Mountain Region, emphasizing responsible, clean, and efficient operations |
101 |
| 20 |
Meritage Midstreammeritagemidstream.com
A midstream services company offering natural gas, NGL, crude oil gathering, processing, and transportation, focusing on strategic partnerships and unconventional shale plays |
72 |
| 21 |
Aspectaspectholdings.com
A company focusing on prospecting and drilling for oil and gas resources, leveraging seismic, geological, and engineering expertise internationally to promote portfolio diversification |
65 |
| 22 |
Fidelity Exploration and Production Companyfidelityepco.com
A company involved in the acquisition, exploration, development, and production of natural gas and oil resources, part of a larger Fortune 500 group |
65 |
| 23 |
Raisa Energy LLCraisa.com
A Denver-based independent Oil & Gas exploration company using technology to accurately value risk and create value in major basins |
64 |
| 24 |
High Sierra Energy, LP - Subsidiary of NGL Energy Partners LPhighsierraenergy.com
A midstream energy company based in Denver, Colorado, operating in the natural resources industry, specializing in gathering, transporting, marketing crude oil and NGLs, and providing oilfield water services |
60 |
| 25 |
Concord Energy LLCconcordenergy.com
Leader in energy services and solutions offering natural gas, oil marketing, water services with a focus on customer trust and industry relationships |
56 |
| 26 |
Elk Petroleumelkpetroleum.com
Company specializing in developing and producing long-lived oil and gas reserves in the Greater Aneth Field, with ownership of wells, infrastructure, and operating units |
52 |
| 27 |
Extraction Oil & GasExtractionOG.com
A domestic energy company in the Rocky Mountains focusing on exploration and production of oil and gas reserves through drilling and acquisitions |
47 |
| 28 |
Central Resources, Inc.dryneedlinginstitute.com
An independent oil and gas company with operations in the US, Argentina, Brazil, Canada, and The Netherlands, focusing on profitable growth and international transactions |
25 |
| 29 |
HRM Resourceshrmres.com
Oil and gas exploration and production company based in Denver, emphasizing trust, transparency, and accountability for a sustainable energy future |
20 |
| 30 |
Gary-Williams Energy Corporationgwec.com
An energy company with refining operations in Oklahoma, producing gasoline, diesel fuel, jet fuel, solvents, and asphalt with a total capacity of 185,000 bpd |
12 |
| 31 |
Mile High Employment Solutionsmh-employment.com
Specializing in providing skilled employees to the energy industry, with a focus on diverse recruiting services and strong community partnerships |
10 |
| 32 |
WILBANKS RESERVE CORPORATIONwilbanksreserve.com
An oil and energy company operating out of Denver, Colorado, focusing on oil exploration and extraction in the United States |
7 |
| 33 |
Valkyrie Operating, LLC.valkyrie-resources.com
Oil and gas production company located in Denver, CO, specializing in operating and developing oil and gas properties |
5 |
| 34 |
Aspect Holdings, LLCaspectenergy.com
Exploring and producing oil & gas globally, specializing in 3D seismic exploration, shale gas, royalty acquisition, wind and potash development |
4 |
| 35 |
West Edgewestedgeenergy.com
A transportation and distribution company specializing in refined petroleum products, crude oil, natural gas, and water, providing infrastructure solutions to energy producers |
3 |
| 36 |
Camino Energy Inc.caminoenergyinc.com
A performance improvement company in the energy industry, providing strategy and advisory solutions to optimize energy infrastructure assets and increase operational efficiency |
3 |
| 37 |
Divide Energy Groupdivideenergy.com
A midstream development company specializing in cost-effective infrastructure solutions to deliver energy supplies to market, focused on enhancing commodity value and bridging infrastructure gaps |
2 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 10, 2026.
More company lists in Denver
- The largest companies in Denver 645
- SaaS companies in Denver 75
- Software Development companies in Denver 44
- Real Estate companies in Denver 39
- Hospitals and Health Care companies in Denver 32
- Financial Services companies in Denver 28