These Danish professional services companies are mostly large firms, many of them operating globally. They span a range of sectors, including facilities management, engineering, IT consulting, and non-profit organizations. Companies such as ISS A/S, a workplace experience and facility management company, and Ramboll, a global company offering sustainable solutions in architecture, engineering, and consultancy, are prominent examples.
A clear pattern among these companies is their strong presence in Copenhagen, which serves as the headquarters for many, including FLSmidth, a global supplier to the mining and cement industries, and Netcompany, providing agile IT consulting and digital transformation services. Another commonality is their focus on sustainable solutions, as seen with COWI, which creates sustainable solutions to improve quality of life, and UNOPS, supporting humanitarian and development solutions.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
ISS A/Sissworld.com
A workplace experience and facility management company that provides placemaking solutions for better business performance and enjoyable work environments |
64,283 | |||
| 2 |
Rambollramboll.com
Global company offering sustainable solutions in architecture, engineering, and consultancy across various sectors to create sustainable cities and societies worldwide |
18,506 | |||
| 3 | 12,984 | ||||
| 4 | 8,647 | ||||
| 5 | 8,492 | ||||
| 6 |
Netcompanynetcompany.com
Providing agile IT consulting and digital transformation services, delivering scalable, modern technology solutions for large Northern European clients. |
8,266 | |||
| 7 | 3,794 | ||||
| 8 |
Atos IT Solutions and Services A/Satos.net
An international IT service provider offering high-tech transaction, consulting, system integration, and outsourcing services to a global customer base across various industries |
3,772 | |||
| 9 | 3,539 | ||||
| 10 |
MOE Denmarkarteliagroup.dk
The company offers services under the name Artelia and operates in Denmark Check their LinkedIn profile for more information |
2,916 | |||
| 11 |
Relatedrelated.dk
Nordic PR, communications, and marketing agency specializing in tech and travel industries Represents international clients for strategic, tactical, and operational communications services |
2,500 | |||
| 12 |
Columbuscolumbusglobal.com
A global IT services and consulting company offering digital transformation solutions for various industries, with extensive experience and a customer-centric approach |
2,496 | |||
| 13 |
FORCE Technologyforcetechnology.com
Technology consultancy providing testing, calibration, analysis, sensor systems, and training to support sustainable and safe technological advancements for companies. |
2,372 | |||
| 14 |
emagineemagine.org
Providing tailored IT consulting services including team extension, nearshoring, dedicated teams, and managed services for diverse industries. |
2,182 | |||
| 15 |
Semco Maritimesemcomaritime.com
An international engineering and contracting company with expertise in conventional energy and offshore wind, supporting a sustainable energy transition |
2,113 | |||
| 16 |
Implement Consulting Groupimplementconsultinggroup.com
Company helps organizations with transformation and functional expertise. Focus on human-centric change, agile teams, and client collaboration for competitive, adaptable, sustainable, and innovative results. |
2,007 | |||
| 17 |
DHIdhigroup.com
The company specializes in water management, climate change adaptation, water quality improvement, and offering sustainable solutions for the global water industry |
1,794 | |||
| 18 |
Beierholmbeierholm.dk
auditing and consulting services for small and medium-sized companies, specializing in finance, tax, investment, business development, and sustainability |
1,774 | |||
| 19 |
PwC Danmarkpwc.dk
Providing audit, tax, and advisory services to businesses and public sector clients, focusing on trust and solving key challenges. |
1,738 | |||
| 20 |
Designitdesignit.com
An award-winning experience innovation company helping businesses create change through strategy, design, marketing, and tech solutions for complex problems |
1,663 | |||
| 21 | 1,636 | ||||
| 22 |
Sweco Danmark A/Ssweco.dk
Sweco plans and designs sustainable buildings, efficient infrastructure, and clean water access worldwide, with 15,000 employees offering expertise for diverse projects |
1,284 | |||
| 23 |
Artelia Denmarkarteliagroup.dk
Large multidisciplinary consulting engineering company, specializing in building construction, infrastructure, water, industry, energy. Part of an international group with global presence. |
1,278 | |||
| 24 |
Ramboll Management Consultingramboll.com
Empowering sustainable change through multi-disciplined management consultancy, addressing global megatrends like digitalisation, climate change, and sustainability with a Nordic heritage. |
1,300 | |||
| 25 |
BDO Danmarkbdo.dk
The company is a Danish-owned and operated advisory firm, part of the global BDO network, providing auditing, accounting, and consulting services to businesses for growth and development |
1,227 | |||
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. | |||||
| 26 | 1,169 | ||||
| 27 |
DELTA - a part of FORCE Technologymadebydelta.com
An independent technology company providing accessible information, advanced technology services, product development support, testing, certification, and sustainable solutions since 1941 |
1,086 | |||
| 28 | 1,028 | ||||
| 29 |
ISS Franceissworld.com
Provider of integrated facility services including cleaning, catering, security, property, and support services for diverse industries and workplaces. |
1,018 | |||
| 30 |
VML MAPvml-map.com
Global team specializing in Marketing Automation, Personalization, Loyalty, and CRM, crafting personalized content to create connections between brands and consumers worldwide |
929 | |||
| 31 | 920 | ||||
| 32 |
Poul Schmith/Kammeradvokatenpoulschmith.dk
A leading Danish law firm with extensive experience in litigation and arbitration, offering a wide range of services including regulatory advice and public law practice |
842 | |||
| 33 |
Initinitgroup.com
Uniting top companies and professionals in Industrial IT and automation across multiple European countries with around 800 employees. |
823 | |||
| 34 |
Moment A/Smoment.dk
Leader in temp and recruitment services in Denmark, connecting talented candidates with varied jobs while prioritizing proper conditions for employees and temps |
818 | |||
| 35 |
AlfaPeoplealfapeople.com
A global leader in Microsoft Dynamics 365 consulting, offering tailored CRM and ERP solutions to drive growth and customer satisfaction worldwide |
726 | |||
| 36 |
NIRAS International Consultingniras.com
International consultancy providing technical assistance and project management for development programs worldwide with a large network of experts |
704 | |||
| 37 |
Plesnerplesner.com
Leading Danish law firm specializing in strategic legal advisory services for businesses, asset protection, transfer, financing, and complex dispute resolution |
690 | |||
| 38 |
Bech-Bruunbechbruun.com
Bech-Bruun is a market-oriented law firm specializing in all areas of business law, offering services to Danish business, public sector, and global companies |
674 | |||
| 39 |
Kromann Reumertkromannreumert.com
Leading full-service law firm with offices in Denmark and London, offering quality legal services with a team of almost 550 dedicated professionals |
659 | |||
| 40 |
Gorrissen Federspielgorrissenfederspiel.com
A leading Danish law firm offering top legal solutions to domestic and international clients through a team of ambitious professionals |
648 | |||
| 41 |
WSP Danmarkwsp.com
Leading professional services consulting firm shaping built and natural environments for future generations through innovative solutions and sustainable practices |
638 | |||
| 42 |
Arkitemaarkitema.com
A leading Scandinavian architectural firm specializing in creating sustainable cities through collaboration, expertise, and design in various sectors |
635 | |||
| 43 |
EDC Poul Erik Bechpoulerikbech.dk
The largest estate agency in Denmark with over 500 employees, offering residential and commercial services independently from banks, supporting charitable initiatives |
623 | |||
| 44 | 622 | ||||
| 45 |
Henning Larsenhenninglarsen.com
An international design studio specializing in architecture, landscape, and urbanism, focusing on creating spaces that prioritize human interaction, natural light, and sustainability |
613 | |||
| 46 |
Grant Thornton Denmarkgrantthornton.dk
A Danish-owned accounting and consulting firm with almost 600 employees offering auditing, accounting, and advisory services to a diverse client portfolio |
581 | |||
| 47 |
KPMG Denmarkkpmg.com
Deliver audit, tax, and advisory services using technology to empower clients, drive transformation, and add value to businesses and society. |
570 | |||
| 48 |
Zacco - 360° Intellectual Propertyzacco.com
An international full-service IP solutions and brand protection specialist, helping organizations develop, manage, and protect their intellectual property globally |
539 | |||
| 49 |
LanguageWirelanguagewire.com
A global Language Service Provider offering translation and multilingual communication services through a combination of AI technology and human expertise |
535 | |||
| 50 |
CfL - Bedre ledere. Bedre resultater.cfl.dk
A leadership center in Denmark offering a full range of services to develop leaders and organizations, focused on improving leadership quality |
517 | |||
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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 Denmark
- The largest companies in Denmark 2,804
- Multinational companies in Denmark 777
- Retail chains in Denmark 339
- Manufacturers in Denmark 294
- Software Development companies in Denmark 279
- Companies with in-house R&D in Denmark 259
- SaaS companies in Denmark 253
- Critical infrastructure operators in Denmark 175
- Hardware manufacturers in Denmark 173
- Financial services firms in Denmark 160
- E-commerce companies in Denmark 152
- Public sector organisations in Denmark 150
- Companies with a mobile app in Denmark 145
- Subscription businesses in Denmark 134
- Distributors and wholesalers in Denmark 122
- Food and Beverage Manufacturing companies in Denmark 119
- Retail Apparel and Fashion companies in Denmark 119
- Government Administration companies in Denmark 115
- Education providers in Denmark 109
- Hotel and hospitality groups in Denmark 109
- Consulting firms in Denmark 107
- IT services companies in Denmark 102
- Food and beverage companies in Denmark 101
- IT Services and IT Consulting companies in Denmark 96