This list features large consulting firms in Norway. The companies span various sectors, including engineering, IT services, and business consulting. Notably, Norconsult offers multidisciplinary engineering and project management, while Multiconsult focuses on a wide range of consulting and design services. Bouvet ASA specializes in technology, communication, and management services, and Zalaris provides HR and payroll administration solutions. PwC Norway and KPMG Norway are prominent in business consulting and auditing.
A common pattern among these firms is their strong presence in Oslo, which serves as the headquarters for many of the listed companies. The companies also represent a mix of established firms, such as Multiconsult founded in 1908, and more recent entrants like AIDER, founded in 2019, indicating a continuous evolution in the consulting landscape.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Norconsultnorconsult.no
Multidisciplinary consultancy offering engineering, design, planning, and project management services across public and private sectors globally. |
4,574 | |||
| 2 |
Multiconsultmulticonsult.no
Multiconsult offers a wide range of consulting, engineering, and design services in various sectors, with a focus on meeting customer expectations and achieving satisfaction |
3,018 | |||
| 3 |
Bouvet ASAbouvet.no
Leading Scandinavian consulting company providing technology, communication, and management services. Offers development and advisory services to public and private sector clients. |
2,325 | |||
| 4 |
Zalariszalaris.com
Providing HR and payroll administration solutions, empowering clients with valuable information to invest in their people, fostering team spirit and achieving high results |
1,822 | |||
| 5 |
PwC Norwaypwc.no
A leading global professional services firm with deep expertise in auditing, advisory, and legal services, operating in 155 countries worldwide |
1,802 | |||
| 6 | 1,773 | ||||
| 7 | 1,596 | ||||
| 8 | 1,540 | ||||
| 9 |
KPMG Norwaykpmg.com
Providing audit, consulting, legal services with focus on cybersecurity, sustainability, technology, and future-oriented business solutions for clients. |
1,514 | |||
| 10 | 1,471 | ||||
| 11 |
Deloitte Norwaydeloitte.com
Global network offering audit, consulting, financial advisory, risk, and tax services to public and private clients in various industries worldwide |
1,253 | |||
| 12 |
Asplan Viak ASasplanviak.no
Provides multidisciplinary consulting in architecture, engineering, planning, and environmental services focusing on sustainable, functional, and client-oriented project solutions. |
1,211 | |||
| 13 |
Rystad Energyrystadenergy.com
An independent advisory and research firm providing data and insights for decision-making in global energy markets, spanning oil, gas, renewables, and more |
939 | |||
| 14 | 863 | ||||
| 15 |
Global Maritimeglobalmaritime.com
Global Maritime provides comprehensive offshore project lifecycle services, specializing in engineering, design, marine warranty surveying, risk management, and decommissioning with innovative solutions |
846 | |||
| 16 |
Moreld Applyapply.no
A leading engineering company specializing in projects from concept to completion, offering services in maintenance, modifications, system integration, and operations support |
782 | |||
| 17 |
Γ
F Norgeafconsult.com
An international engineering and design firm focusing on energy, industry, and infrastructure, creating sustainable solutions with skilled employees and technology worldwide |
744 | |||
| 18 |
Advania Norgeadvania.no
A Northern European IT-services company with over 3,500 employees, helping customers improve performance through innovative use of IT platforms |
699 | |||
| 19 | 699 | ||||
| 20 |
NoA - The North Alliancethenorthalliance.com
A Nordic-based creative and tech group with over 1200 experts focused on driving customer-driven growth in Sweden, Norway, Denmark, Finland, and Poland |
623 | |||
| 21 | 618 | ||||
| 22 | 612 | ||||
| 23 | 604 | ||||
| 24 | 533 | ||||
| 25 |
NGI - Norwegian Geotechnical Institutengi.no
NGI is an international center for research and consultancy in engineering-related geosciences, specializing in finding sustainable solutions for infrastructure and environmental challenges worldwide |
480 | |||
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 | 460 | ||||
| 27 |
Webstepwebstep.no
A profitable technology and consulting firm with 400+ IT experts, providing uncomplicated solutions to complex problems for customers across industries |
430 | |||
| 28 |
WSP i Norgewsp.com
A leading company in project management, providing services to public and private sectors in industries such as construction, transportation, energy, and industrial sectors |
416 | |||
| 29 | 403 | ||||
| 30 |
EDB Business Partnerevry.com
A part of EVRY, the company offers extensive IT solutions to Nordic businesses, financial institutions, public sector entities, municipalities, and health authorities |
396 | |||
| 31 | 358 | ||||
| 32 |
SNC-Lavalin Atkinsatkinsglobal.no
Building a smarter, safer, and more sustainable society by providing expertise and solutions in complex projects, focusing on modern, digital, and sustainable solutions |
346 | |||
| 33 |
Computas AScomputas.com
Nordic provider of IT solutions and consulting, specializing in cloud solutions, AI, and machine learning, with expertise in system development and digitization processes |
340 | |||
| 34 |
SpareBank 1 SΓΈr-Norge Forretningspartnerforretningspartner.no
A prominent accounting and consulting company in southwest Norway with over 400 skilled employees across multiple regions including Vestland, Rogaland, Agder, and Oslo |
338 | |||
| 35 |
DNV - Oil & Gasdnvgl.com
Leading technical advisor to the global oil and gas industry, specializing in enabling safe, reliable, and enhanced performance in projects and operations |
333 | |||
| 36 |
VIEW Group Norgeviewgroup.no
VIEW Ledger is a technology-driven company providing automated systems and outsourcing services for finance and accounting processes since 2004 Serving multinational corporations and small businesses |
331 | |||
| 37 |
Eiendomshuset Malling & Comalling.no
This company is a prominent provider of commercial real estate services in Norway, managing a large portfolio and facilitating significant transactions |
329 | |||
| 38 |
RSM Norgersm.global
A medium-sized audit and advisory firm in Norway, specializing in audit, tax, transactions, and providing tailored services across various industries |
326 | |||
| 39 |
The Cloud People Globalthecloudpeople.com
Global ServiceNow Elite partner with expertise in advising, implementing, and managing ServiceNow solutions for maximum value and customer satisfaction |
316 | |||
| 40 |
Cognizant Oil & Gascognizant.com
A consulting and outsourcing company for the Oil and Gas industry in over 20 countries, acquired by a leading IT and business services provider |
308 | |||
| 41 | 307 | ||||
| 42 | 306 | ||||
| 43 |
Arribatec Grouparribatec.com
Global provider of digital business solutions, focusing on ERP, system integration, and CPM Emphasizing innovative use of IT for competitive advantage |
294 | |||
| 44 | 273 | ||||
| 45 |
Geodata ASgeodata.no
Provides software, data, and expert consulting to visualize and analyze business data in maps, enriching it with geographic analyses for various needs. |
230 | |||
| 46 |
DNV GLultradeep.com
Technical engineering support for oil and gas industry, specializing in dynamic cable/umbilical systems design, software licensing, electrical/hydraulic calculations, and subsea equipment analysis/testing |
229 | |||
| 47 |
CGI Norgecginorge.no
A leading technology company in Norway delivering end-to-end IT and business process services to drive continuous business development for clients |
200 | |||
| 48 |
Admentoadmento.no
An all-in-one competence house offering finance, consulting, HR, and technology services in Norway Aim to help businesses create value and make informed decisions |
187 | |||
| 49 |
Nord Poolnordpoolgroup.com
Europe's leading power market offering efficient trading, clearing, and settlement services across multiple countries, with 30 years of experience in the industry |
186 | |||
| 50 |
Technogardentechnogarden.no
A company specializing in providing skilled engineering resources, recruitment services, and opportunities for skill development in various technical disciplines |
184 | |||
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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.
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- The largest companies in Norway 2,027
- Multinational companies in Norway 556
- Retail chains in Norway 225
- Critical infrastructure operators in Norway 220
- Software Development companies in Norway 216
- SaaS companies in Norway 201
- Government Administration companies in Norway 169
- Companies with in-house R&D in Norway 162
- Financial services firms in Norway 141
- Public sector organisations in Norway 132
- Manufacturers in Norway 130
- Professional services firms in Norway 116
- Energy companies in Norway 107
- IT Services and IT Consulting companies in Norway 103
- Hardware manufacturers in Norway 102
- Corporate groups and holding companies in Norway 100
- Publicly traded companies in Norway 99
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- Education providers in Norway 94
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- Subscription businesses in Norway 84
- IT services companies in Norway 78
- Oil and Gas companies in Norway 76