# The 30 largest professional services firms in Copenhagen

Tamtam tracks 56 professional services firms headquartered in Copenhagen. This list ranks the 30 largest by number of employees on LinkedIn, led by ISS A/S, Ramboll and FLSmidth. Their median headcount is 648. Half of them were founded in 1994 or later.

These Copenhagen-based professional services firms include large, established companies. ISS A/S provides facility management, Ramboll offers sustainable engineering solutions, and FLSmidth supplies technology to the mining and cement industries. Netcompany, Columbus, and emagine specialize in IT consulting and digital transformation.

A notable pattern is the strong presence of IT services and consulting, with several companies like Netcompany and Columbus based in Copenhagen. Furthermore, the list features a significant number of law firms such as Plesner, Bech-Bruun, and Gorrissen Federspiel, indicating a concentration of legal expertise in the city.

🇩🇰 Copenhagen · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [ISS A/S](https://www.tamtam.ai/c/iss-a-s) (issworld.com)<br>A workplace experience and facility management company that provides placemaking solutions for better business performance and enjoyable work environments | Facilities Services | 🇩🇰 Copenhagen | 64,283 |  |
| 2 | [Ramboll](https://www.tamtam.ai/c/ramboll) (ramboll.com)<br>Global company offering sustainable solutions in architecture, engineering, and consultancy across various sectors to create sustainable cities and societies worldwide | Engineering Services | 🇩🇰 Copenhagen | 18,506 | 1945 |
| 3 | [FLSmidth](https://www.tamtam.ai/c/flsmidth) (fls.com)<br>A global supplier to the mining and cement industries, FLSmidth offers technology and services to improve performance, reduce costs, and minimize environmental impact | Industrial Machinery Manufacturing | 🇩🇰 Copenhagen | 12,984 | 1882 |
| 4 | [Netcompany](https://www.tamtam.ai/c/netcompany) (netcompany.com)<br>Providing agile IT consulting and digital transformation services, delivering scalable, modern technology solutions for large Northern European clients. | IT Services and IT Consulting | 🇩🇰 Copenhagen | 8,266 | 2000 |
| 5 | [Columbus](https://www.tamtam.ai/c/columbus) (columbusglobal.com)<br>A global IT services and consulting company offering digital transformation solutions for various industries, with extensive experience and a customer-centric approach | IT Services and IT Consulting | 🇩🇰 Copenhagen | 2,496 |  |
| 6 | [emagine](https://www.tamtam.ai/c/emagine) (emagine.org)<br>Providing tailored IT consulting services including team extension, nearshoring, dedicated teams, and managed services for diverse industries. | IT Services and IT Consulting | 🇩🇰 Copenhagen | 2,182 | 1989 |
| 7 | [Designit](https://www.tamtam.ai/c/designit) (designit.com)<br>An award-winning experience innovation company helping businesses create change through strategy, design, marketing, and tech solutions for complex problems | Design Services | 🇩🇰 Copenhagen | 1,663 |  |
| 8 | [NNIT](https://www.tamtam.ai/c/nnit) (nnit.com)<br>An international IT service provider offering consultancy, development, implementation, and outsourcing of IT services to private companies and public sector organizations | IT Services and IT Consulting | 🇩🇰 Copenhagen | 1,636 | 1994 |
| 9 | [ISS France](https://www.tamtam.ai/c/iss-france) (issworld.com)<br>Provider of integrated facility services including cleaning, catering, security, property, and support services for diverse industries and workplaces. | Facilities Services | 🇩🇰 Copenhagen | 1,018 | 1994 |
| 10 | [VML MAP](https://www.tamtam.ai/c/vml-map) (vml-map.com)<br>Global team specializing in Marketing Automation, Personalization, Loyalty, and CRM, crafting personalized content to create connections between brands and consumers worldwide | Business Consulting and Services | 🇩🇰 Copenhagen | 929 |  |
| 11 | [Moment A/S](https://www.tamtam.ai/c/moment-a-s) (moment.dk)<br>Leader in temp and recruitment services in Denmark, connecting talented candidates with varied jobs while prioritizing proper conditions for employees and temps | Staffing and Recruiting | 🇩🇰 Copenhagen | 818 | 1997 |
| 12 | [NIRAS International Consulting](https://www.tamtam.ai/c/niras-international-consulting) (niras.com)<br>International consultancy providing technical assistance and project management for development programs worldwide with a large network of experts | Business Consulting and Services | 🇩🇰 Copenhagen | 704 | 1956 |
| 13 | [Plesner](https://www.tamtam.ai/c/plesner) (plesner.com)<br>Leading Danish law firm specializing in strategic legal advisory services for businesses, asset protection, transfer, financing, and complex dispute resolution | Law Practice | 🇩🇰 Copenhagen | 690 | 1918 |
| 14 | [Bech-Bruun](https://www.tamtam.ai/c/bech-bruun) (bechbruun.com)<br>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 | Law Practice | 🇩🇰 Copenhagen | 674 | 1872 |
| 15 | [Gorrissen Federspiel](https://www.tamtam.ai/c/gorrissen-federspiel) (gorrissenfederspiel.com)<br>A leading Danish law firm offering top legal solutions to domestic and international clients through a team of ambitious professionals | Law Practice | 🇩🇰 Copenhagen | 648 |  |
| 16 | [EDC Poul Erik Bech](https://www.tamtam.ai/c/edc-poul-erik-bech) (poulerikbech.dk)<br>The largest estate agency in Denmark with over 500 employees, offering residential and commercial services independently from banks, supporting charitable initiatives | Real Estate | 🇩🇰 Copenhagen | 623 | 1978 |
| 17 | [Henning Larsen](https://www.tamtam.ai/c/henning-larsen) (henninglarsen.com)<br>An international design studio specializing in architecture, landscape, and urbanism, focusing on creating spaces that prioritize human interaction, natural light, and sustainability | Architecture and Planning | 🇩🇰 Copenhagen | 613 | 1959 |
| 18 | [Zacco - 360° Intellectual Property](https://www.tamtam.ai/c/zacco-360-intellectual-property) (zacco.com)<br>An international full-service IP solutions and brand protection specialist, helping organizations develop, manage, and protect their intellectual property globally | Legal Services | 🇩🇰 Copenhagen | 539 |  |
| 19 | [LanguageWire](https://www.tamtam.ai/c/languagewire) (languagewire.com)<br>A global Language Service Provider offering translation and multilingual communication services through a combination of AI technology and human expertise | IT Services and IT Consulting | 🇩🇰 Copenhagen | 535 | 2000 |
| 20 | [CfL - Bedre ledere. Bedre resultater.](https://www.tamtam.ai/c/cfl-bedre-ledere-bedre-resultater) (cfl.dk)<br>A leadership center in Denmark offering a full range of services to develop leaders and organizations, focused on improving leadership quality | Business Consulting and Services | 🇩🇰 Copenhagen | 517 |  |
| 21 | [Tolkdanmark ApS](https://www.tamtam.ai/c/tolkdanmark-aps) (tolkdanmark.dk)<br>A company offering interpretation services 24/7, including sign language, with personal calendars available via app and website in Denmark | Translation and Localization | 🇩🇰 Copenhagen | 514 | 2002 |
| 22 | [IMPACT Commerce](https://www.tamtam.ai/c/impact-commerce) (impactcommerce.com)<br>Impact is a digital commerce agency focused on building omnichannel solutions through strategy, design, tech, and optimization to fuel meaningful growth | Technology, Information and Internet | 🇩🇰 Copenhagen | 437 |  |
| 23 | [bro](https://www.tamtam.ai/c/bro) (wearebro.dk)<br>The company specializes in combining communication, organizational development, and behavioral design to create effective solutions that influence people's behavior | Public Relations and Communications Services | 🇩🇰 Copenhagen | 424 | 1999 |
| 24 | [O'Brien & Gere (OBG)](https://www.tamtam.ai/c/o-brien-and-gere-obg) (ramboll.com)<br>A company specializing in engineering, design, and consultancy joined forces with a larger organization to enhance expertise and provide innovative solutions globally | Civil Engineering | 🇩🇰 Copenhagen | 422 | 1945 |
| 25 | [DLA Piper Denmark](https://www.tamtam.ai/c/dla-piper-denmark) (denmark.dlapiper.com)<br>A global law firm with offices in over 40 countries, providing legal advice and innovative solutions to clients worldwide for success | Law Practice | 🇩🇰 Copenhagen | 418 |  |
| 26 | [SLA](https://www.tamtam.ai/c/sla-copenhagen) (sla.dk)<br>An internationally renowned design studio specializing in nature-based solutions for urban challenges, creating sustainable and inclusive spaces for people, cities, and nature | Architecture and Planning | 🇩🇰 Copenhagen | 409 | 1994 |
| 27 | [Preferred by Nature](https://www.tamtam.ai/c/preferred-by-nature) (preferredbynature.org)<br>International non-profit supporting sustainable land management and business practices through certification, awareness projects, and capacity building worldwide. | Non-profit Organizations | 🇩🇰 Copenhagen | 374 | 1994 |
| 28 | [Cepheo](https://www.tamtam.ai/c/cepheo) (cepheo.com)<br>Delivers intelligent, cloud-based business solutions using Microsoft Dynamics 365, helping Nordic companies optimize operations, make smarter decisions, and achieve digital empowerment. | IT Services and IT Consulting | 🇩🇰 Copenhagen | 363 | 2023 |
| 29 | [Söderberg & Partners Danmark](https://www.tamtam.ai/c/soderberg-and-partners-danmark) (soderbergpartners.dk)<br>A leading insurance and pension broker in the Nordics with over 3,300 franchisees and employees, providing tailored solutions through personal and local advice | Insurance | 🇩🇰 Copenhagen | 338 | 2004 |
| 30 | [MB Shipbrokers](https://www.tamtam.ai/c/mb-shipbrokers) (mbshipbrokers.com)<br>Global ship brokerage leader with 17 offices worldwide, catering to various shipbroking needs for ship owners, charterers, shipbuilders, and financial institutions | Maritime Transportation | 🇩🇰 Copenhagen | 295 | 1914 |

## 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 12, 2026.

## More company lists in Copenhagen

- [The largest companies in Copenhagen](https://www.tamtam.ai/l/largest-companies-copenhagen) (779)
- [Multinational companies in Copenhagen](https://www.tamtam.ai/l/multinational-companies-copenhagen) (197)
- [SaaS companies in Copenhagen](https://www.tamtam.ai/l/saas-companies-copenhagen) (106)
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- [Financial services firms in Copenhagen](https://www.tamtam.ai/l/financial-services-firms-copenhagen) (59)
- [Companies with a mobile app in Copenhagen](https://www.tamtam.ai/l/companies-with-mobile-app-copenhagen) (53)
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- [Hotel and hospitality groups in Copenhagen](https://www.tamtam.ai/l/hospitality-groups-copenhagen) (44)
- [Companies with in-house R&D in Copenhagen](https://www.tamtam.ai/l/r-and-d-companies-copenhagen) (42)
- [Retail Apparel and Fashion companies in Copenhagen](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-copenhagen) (39)
- [Consulting firms in Copenhagen](https://www.tamtam.ai/l/consulting-firms-copenhagen) (38)
- [Critical infrastructure operators in Copenhagen](https://www.tamtam.ai/l/critical-infrastructure-operators-copenhagen) (38)
- [Financial Services companies in Copenhagen](https://www.tamtam.ai/l/financial-services-companies-copenhagen) (38)
- [Restaurants companies in Copenhagen](https://www.tamtam.ai/l/restaurants-companies-copenhagen) (35)
- [IT Services and IT Consulting companies in Copenhagen](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-copenhagen) (33)
- [Public sector organisations in Copenhagen](https://www.tamtam.ai/l/public-sector-organisations-copenhagen) (32)
- [AI companies in Copenhagen](https://www.tamtam.ai/l/ai-companies-copenhagen) (30)
- [Insurance companies in Copenhagen](https://www.tamtam.ai/l/insurance-companies-copenhagen) (30)
- [Government Administration companies in Copenhagen](https://www.tamtam.ai/l/government-administration-companies-copenhagen) (29)
- [Technology, Information and Internet companies in Copenhagen](https://www.tamtam.ai/l/technology-information-and-internet-companies-copenhagen) (29)
- [IT services companies in Copenhagen](https://www.tamtam.ai/l/it-services-companies-copenhagen) (29)
- [Education providers in Copenhagen](https://www.tamtam.ai/l/education-companies-copenhagen) (28)

## The same list elsewhere in Denmark

- [Professional services firms in Denmark](https://www.tamtam.ai/l/professional-services-firms-denmark) (150)
- [Professional services firms in Capital Region of Denmark](https://www.tamtam.ai/l/professional-services-firms-capital-region-of-denmark) (33)

## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,698)

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Source: https://www.tamtam.ai/l/professional-services-firms-copenhagen