The companies headquartered in Essen are primarily large, established firms in industrial sectors, including chemical manufacturing, utilities, and retail. Evonik is a global chemical company, thyssenkrupp is an international industrial and technology company, and E.ON is a leading energy group in Europe. Other notable companies include ALDI Nord Group, a leading discount retailer, and RWE, a global energy company focused on green energy.
The list highlights a concentration of companies with deep roots in traditional industries. Many of these companies, such as RWE and Deichmann, were founded in the late 19th or early 20th century, indicating a long-standing industrial presence in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Evonikevonik.com
Global chemical company providing innovative, customized products and solutions to enhance industrial competitiveness and improve people's lives worldwide. |
34,000 | |||
| 2 |
thyssenkruppthyssenkrupp.com
An international industrial and technology company focused on developing innovative and sustainable solutions for the future across various sectors |
32,389 | |||
| 3 | 30,521 | ||||
| 4 |
ALDI Nord Groupaldi-nord.de
Leading discount retailer operating 4,700 stores in nine European countries, focusing on simple shopping experiences and employee development. |
22,682 | |||
| 5 | 20,000 | ||||
| 6 |
Brenntagbrenntag.com
Global leader in chemical and ingredient products offering tailored solutions, supply chain services, and a full-line portfolio to enhance partner success worldwide |
12,148 | |||
| 7 |
Deichmanndeichmann-karriere.de
A leading shoe retail company with over 4,200 stores in 31 countries, offering career opportunities, training courses, and international development programs |
5,881 | |||
| 8 | 4,920 | ||||
| 9 |
HOCHTIEFhochtief.de
A global construction company creating living spaces such as tunnels, roads, bridges, and cultural centers with a focus on integrity, innovation, and sustainability |
2,779 | |||
| 10 |
thyssenkrupp Materials Servicesthyssenkrupp-materials-services.com
Leading global materials distributor offering trading, customized processing, and digital supply chain solutions to diverse industries worldwide. |
2,632 | |||
| 11 |
FOM University of Applied Sciences for Economics and Managementfom.de
A leading European institution offering practical-oriented bachelor's and master's degrees in various fields to students, professionals, and international students through campus and online learning options |
2,514 | |||
| 12 | 2,332 | ||||
| 13 |
clickworkerclickworker.com
Leading provider of paid crowdsourcing services with 36M+ users worldwide, offering solutions like training data, surveys, text creation, classifications, and more in multiple languages |
1,593 | |||
| 14 |
thyssenkrupp Automotivethyssenkrupp-automotive-technology.com
Design and manufacture high-performance automotive components, assemblies, and production lines ensuring safety, sustainability, and innovation in evolving mobility markets. |
1,518 | |||
| 15 |
RWE Supply & Trading GmbHrwestcareers.com
This trading company operates at the interface between RWE and global energy markets, offering innovative energy supply solutions, risk management concepts, and power plant dispatch optimization |
1,258 | |||
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. | |||||
| 16 |
DMT GROUPdmt-group.com
A global engineering services and consulting company specializing in plant engineering, infrastructure, natural resources, and energy, creating sustainable value for clients worldwide |
810 | |||
| 17 |
thyssenkrupp Aerospacethyssenkrupp-aerospace.com
The company provides tailored supply chain solutions for the aerospace industry on a global scale |
802 | |||
| 18 |
RWE Power AGrwe.com
Company specializing in lignite-based and nuclear power generation, operating mines and power stations with a capacity of 11 gigawatts Manages nuclear facility operations |
722 | |||
| 19 |
GNS Gesellschaft für Nuklear-Service mbHgns.de
A world leader in nuclear solutions, providing casks for spent fuel, radioactive waste management, and decommissioning services with extensive engineering support |
706 | |||
| 20 |
Ferrostaal GmbHferrostaal.com
International industrial service provider managing large-scale projects in various sectors, from initial idea to financial close Also provides equipment, machinery, and customized solutions globally |
671 | |||
| 21 |
Steag Iqony Groupsteag-iqony-group.com
A leading energy company offering comprehensive services in power generation, trading, and optimization, with a focus on efficiency and renewable sources |
625 | |||
| 22 |
medion GmbHmedion.com
A company in the Ruhr area offers cutting-edge products and services internationally, including electronics, smart home products, mobile contracts, and more |
580 | |||
| 23 |
RWE Generation SErwe.com
A leading energy company in Europe generating electricity from gas, hydropower, and biomass, also focusing on hydrogen projects with various partners |
580 | |||
| 24 |
Iqonysteag-iqony-group.com
Iqony specializes in providing holistic solutions for green energy, including renewable technologies, hydrogen solutions, storage, and engineering services worldwide |
530 | |||
| 25 |
TRIMET Aluminium SEtrimet.eu
Development, production, recycling, casting, and sales of aluminium light-metal products for automotive, aerospace, energy, construction, and packaging industries. |
490 | |||
| 26 |
TÜV NORD CERTtuev-nord.de
An insurance company operating in Germany that is part of the TÜV NORD Gruppe, specializing in certification services |
370 | |||
| 27 | 330 | ||||
| 28 |
RealCore Group GmbHrealcore.de
Provides SAP consulting, system integration, and process optimization services to support digital transformation across various industries globally. |
282 | |||
| 29 |
SANHA® Groupsanha.com
Leading European manufacturer of pipe systems for drinking water, gas, solar, heating, cooling, and sanitary applications, offering a wide range of materials and innovative solutions worldwide |
219 | |||
| 30 |
E.ON Drive Infrastructureedri.com
Building, owning, and operating public electric vehicle charging infrastructure across Europe, providing accessible charging solutions for all electric vehicle types. |
186 | |||
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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 11, 2026.
More company lists in Essen
The same list elsewhere in Germany
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