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Top 50 consulting firms in Norway

Tamtam tracks 72 consulting firms headquartered in Norway. This list ranks the 50 largest by number of employees on LinkedIn, led by Norconsult, Multiconsult and Bouvet ASA. Their median headcount is 480. Half of them were founded in 1987 or later. The most common headquarters are Oslo (27), Stavanger (3) and Sandnes (2).

πŸ‡³πŸ‡΄ Norway50 companiesUpdated Nov 11, 2026

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.

#CompanyIndustryHeadquarters EmployeesFounded
1
Norconsultnorconsult.no

Multidisciplinary consultancy offering engineering, design, planning, and project management services across public and private sectors globally.

Civil Engineering πŸ‡³πŸ‡΄ Sandvika 4,574 1929
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

Construction πŸ‡³πŸ‡΄ Oslo 3,018 1908
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.

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 2,325 2002
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

Human Resources Services πŸ‡³πŸ‡΄ Oslo 1,822 2000
5
PwC Norwaypwc.no

A leading global professional services firm with deep expertise in auditing, advisory, and legal services, operating in 155 countries worldwide

Business Consulting and Services πŸ‡³πŸ‡΄ Oslo 1,802 n/a
6
EVRYtieto.com

Leading Nordic IT company delivering ideas, technology, and solutions to bring information to life, create value for customers, and contribute positively to society

IT Services and IT Consulting πŸ‡³πŸ‡΄ Fornebu 1,773 1962
7
AGRagr.com

A multi-disciplinary engineering consultancy and software provider specializing in energy solutions, including well management, CCUS, hydrogen, geothermal, and seabed minerals

Oil and Gas πŸ‡³πŸ‡΄ Oslo 1,596 1987
8
AIDERaider.no

A leading competence house redefining the accounting industry with a focus on technology and skilled professionals to help leaders succeed

Accounting πŸ‡³πŸ‡΄ Oslo 1,540 2019
9
KPMG Norwaykpmg.com

Providing audit, consulting, legal services with focus on cybersecurity, sustainability, technology, and future-oriented business solutions for clients.

Business Consulting and Services πŸ‡³πŸ‡΄ Oslo 1,514 n/a
10
BDO Norgebdo.no

This company offers client-focused services with local expertise, delivering professional solutions and creating unique experiences, serving global to small enterprises

Business Consulting and Services πŸ‡³πŸ‡΄ Oslo 1,471 1913
11
Deloitte Norwaydeloitte.com

Global network offering audit, consulting, financial advisory, risk, and tax services to public and private clients in various industries worldwide

Management Consulting πŸ‡³πŸ‡΄ Oslo 1,253 1916
12
Asplan Viak ASasplanviak.no

Provides multidisciplinary consulting in architecture, engineering, planning, and environmental services focusing on sustainable, functional, and client-oriented project solutions.

Civil Engineering πŸ‡³πŸ‡΄ Sandvika 1,211 1958
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

Information Services πŸ‡³πŸ‡΄ Oslo 939 2004
14
Cegalcegal.com

A trusted partner providing cloud solutions, software applications, and consultancy services to industries like Oil & Gas, Renewables, and Ocean

IT Services and IT Consulting πŸ‡³πŸ‡΄ Sandnes 863 2000
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

Engineering Services πŸ‡³πŸ‡΄ Stavanger 846 1979
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

Oil and Gas πŸ‡³πŸ‡΄ Stavanger 782 1979
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

Construction πŸ‡³πŸ‡΄ Oslo 744 n/a
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 699 1939
19
APPLYapply.no

A leading multi-discipline engineering company specializing in oil and gas projects on the Norwegian Continental Shelf, focusing on operations, maintenance, and modifications for improved asset value and performance

Oil and Gas πŸ‡³πŸ‡΄ Stavanger 699 n/a
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 623 2014
21
Iteraitera.com

A leading international company specializing in technology and digital communication services, enabling customers to accelerate sustainable digital transformation and capture new business opportunities globally

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 618 1999
22
321321.no

A consultancy firm focused on digitalization and efficiency, offering development of digital solutions and resource leasing in programming, project management, and advisory services

Software Development πŸ‡³πŸ‡΄ Hamar 612 2019
23
Bekkbekk.no

A Norwegian company with over 500 specialists in strategy, design, and technology, creating innovative solutions for businesses with ambitious goals

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 604 2000
24
HRPhrpas.no

Specializing in project management for construction and infrastructure projects, we aim to be a leading contributor to Norwegian society's development and success

Construction πŸ‡³πŸ‡΄ Oslo 533 2005
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

Research Services πŸ‡³πŸ‡΄ Oslo 480 1953

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26
AFFaff.no

A leading leadership and organizational development consultancy in Norway, offering top-rated programs in partnership with NHH - Norwegian School of Economics

Business Consulting and Services πŸ‡³πŸ‡΄ Bergen 460 1952
27
Webstepwebstep.no

A profitable technology and consulting firm with 400+ IT experts, providing uncomplicated solutions to complex problems for customers across industries

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 430 2000
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

Professional Services πŸ‡³πŸ‡΄ Oslo 416 1997
29
Amestoamesto.no

A family-owned business specializing in business solutions, artificial intelligence, IT services, accounting, HR, and staffing, promoting a culture of inquiry and sustainability

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 403 2002
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Skoyen 396 1961
31
Metiermetier.no

A company specializing in project management, business development, and digital transformation with a strong history of collaboration and making meaningful change

Business Consulting and Services πŸ‡³πŸ‡΄ Oslo 358 1982
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ 346 1987
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 340 1985
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

Accounting πŸ‡³πŸ‡΄ Sandnes 338 n/a
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

Oil and Gas πŸ‡³πŸ‡΄ HΓΈvik 333 1864
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

Financial Services πŸ‡³πŸ‡΄ Oslo 331 2004
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

Real Estate πŸ‡³πŸ‡΄ Oslo 329 1964
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

Financial Services πŸ‡³πŸ‡΄ Oslo 326 1945
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 316 n/a
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Fornebu 308 n/a
41
Omega ASomega.no

Omega specializes in enhancing project performance in complex environments through project personnel resources, IT personnel, and project management systems, embodying the slogan "Big enough to deliver – small enough to care"

Oil and Gas πŸ‡³πŸ‡΄ ØlensvΓ₯g 307 n/a
42
Tetaider.no

We specialize in accounting, advisory, and system solutions to empower decision-making for future-proof businesses, fostering development, innovation, and growth

Accounting πŸ‡³πŸ‡΄ Oslo 306 2007
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 294 n/a
44
Miles ASmiles.no

IT company focused on creating a positive workplace environment with skilled employees offering project deliveries, consulting, advisory services, user experience, and agile coaching

IT Services and IT Consulting πŸ‡³πŸ‡΄ Miles AS 273 2005
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.

IT Services and IT Consulting πŸ‡³πŸ‡΄ Sentrum 230 1989
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

Oil and Gas πŸ‡³πŸ‡΄ Oslo 229 n/a
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

IT Services and IT Consulting πŸ‡³πŸ‡΄ Oslo 200 n/a
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

Accounting πŸ‡³πŸ‡΄ Heimdal 187 1978
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

Services for Renewable Energy πŸ‡³πŸ‡΄ Oslo 186 1993
50
Technogardentechnogarden.no

A company specializing in providing skilled engineering resources, recruitment services, and opportunities for skill development in various technical disciplines

Staffing and Recruiting πŸ‡³πŸ‡΄ Sandvika 184 2003

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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.

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