# 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).
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.
π³π΄ Norway Β· 50 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Norconsult](https://www.tamtam.ai/c/norconsult) (norconsult.no)
Multidisciplinary consultancy offering engineering, design, planning, and project management services across public and private sectors globally. | Civil Engineering | π³π΄ Sandvika | 4,574 | 1929 |
| 2 | [Multiconsult](https://www.tamtam.ai/c/multiconsult) (multiconsult.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 | π³π΄ Oslo | 3,018 | 1908 |
| 3 | [Bouvet ASA](https://www.tamtam.ai/c/bouvet-asa) (bouvet.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 | π³π΄ Oslo | 2,325 | 2002 |
| 4 | [Zalaris](https://www.tamtam.ai/c/zalaris) (zalaris.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 | π³π΄ Oslo | 1,822 | 2000 |
| 5 | [PwC Norway](https://www.tamtam.ai/c/pwc-norway) (pwc.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 | π³π΄ Oslo | 1,802 | |
| 6 | [EVRY](https://www.tamtam.ai/c/evry) (tieto.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 | π³π΄ Fornebu | 1,773 | 1962 |
| 7 | [AGR](https://www.tamtam.ai/c/agr) (agr.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 | π³π΄ Oslo | 1,596 | 1987 |
| 8 | [AIDER](https://www.tamtam.ai/c/aider) (aider.no)
A leading competence house redefining the accounting industry with a focus on technology and skilled professionals to help leaders succeed | Accounting | π³π΄ Oslo | 1,540 | 2019 |
| 9 | [KPMG Norway](https://www.tamtam.ai/c/kpmg-norway) (kpmg.com)
Providing audit, consulting, legal services with focus on cybersecurity, sustainability, technology, and future-oriented business solutions for clients. | Business Consulting and Services | π³π΄ Oslo | 1,514 | |
| 10 | [BDO Norge](https://www.tamtam.ai/c/bdo-norge) (bdo.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 | π³π΄ Oslo | 1,471 | 1913 |
| 11 | [Deloitte Norway](https://www.tamtam.ai/c/deloitte-norway) (deloitte.com)
Global network offering audit, consulting, financial advisory, risk, and tax services to public and private clients in various industries worldwide | Management Consulting | π³π΄ Oslo | 1,253 | 1916 |
| 12 | [Asplan Viak AS](https://www.tamtam.ai/c/asplan-viak-as) (asplanviak.no)
Provides multidisciplinary consulting in architecture, engineering, planning, and environmental services focusing on sustainable, functional, and client-oriented project solutions. | Civil Engineering | π³π΄ Sandvika | 1,211 | 1958 |
| 13 | [Rystad Energy](https://www.tamtam.ai/c/rystad-energy) (rystadenergy.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 | π³π΄ Oslo | 939 | 2004 |
| 14 | [Cegal](https://www.tamtam.ai/c/cegal) (cegal.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 | π³π΄ Sandnes | 863 | 2000 |
| 15 | [Global Maritime](https://www.tamtam.ai/c/global-maritime) (globalmaritime.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 | π³π΄ Stavanger | 846 | 1979 |
| 16 | [Moreld Apply](https://www.tamtam.ai/c/moreld-apply) (apply.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 | π³π΄ Stavanger | 782 | 1979 |
| 17 | [Γ
F Norge](https://www.tamtam.ai/c/af-norge) (afconsult.com)
An international engineering and design firm focusing on energy, industry, and infrastructure, creating sustainable solutions with skilled employees and technology worldwide | Construction | π³π΄ Oslo | 744 | |
| 18 | [Advania Norge](https://www.tamtam.ai/c/advania-norge) (advania.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 | π³π΄ Oslo | 699 | 1939 |
| 19 | [APPLY](https://www.tamtam.ai/c/apply-stavanger) (apply.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 | π³π΄ Stavanger | 699 | |
| 20 | [NoA - The North Alliance](https://www.tamtam.ai/c/noa-the-north-alliance) (thenorthalliance.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 | π³π΄ Oslo | 623 | 2014 |
| 21 | [Itera](https://www.tamtam.ai/c/itera-oslo) (itera.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 | π³π΄ Oslo | 618 | 1999 |
| 22 | [321](https://www.tamtam.ai/c/321) (321.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 | π³π΄ Hamar | 612 | 2019 |
| 23 | [Bekk](https://www.tamtam.ai/c/bekk) (bekk.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 | π³π΄ Oslo | 604 | 2000 |
| 24 | [HRP](https://www.tamtam.ai/c/hrp) (hrpas.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 | π³π΄ Oslo | 533 | 2005 |
| 25 | [NGI - Norwegian Geotechnical Institute](https://www.tamtam.ai/c/ngi-norwegian-geotechnical-institute) (ngi.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 | π³π΄ Oslo | 480 | 1953 |
| 26 | [AFF](https://www.tamtam.ai/c/aff) (aff.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 | π³π΄ Bergen | 460 | 1952 |
| 27 | [Webstep](https://www.tamtam.ai/c/webstep) (webstep.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 | π³π΄ Oslo | 430 | 2000 |
| 28 | [WSP i Norge](https://www.tamtam.ai/c/wsp-i-norge) (wsp.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 | π³π΄ Oslo | 416 | 1997 |
| 29 | [Amesto](https://www.tamtam.ai/c/amesto) (amesto.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 | π³π΄ Oslo | 403 | 2002 |
| 30 | [EDB Business Partner](https://www.tamtam.ai/c/edb-business-partner) (evry.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 | π³π΄ Skoyen | 396 | 1961 |
| 31 | [Metier](https://www.tamtam.ai/c/metier-oslo) (metier.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 | π³π΄ Oslo | 358 | 1982 |
| 32 | [SNC-Lavalin Atkins](https://www.tamtam.ai/c/snc-lavalin-atkins) (atkinsglobal.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 | π³π΄ | 346 | 1987 |
| 33 | [Computas AS](https://www.tamtam.ai/c/computas-as) (computas.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 | π³π΄ Oslo | 340 | 1985 |
| 34 | [SpareBank 1 SΓΈr-Norge Forretningspartner](https://www.tamtam.ai/c/sparebank-1-sor-norge-forretningspartner) (forretningspartner.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 | π³π΄ Sandnes | 338 | |
| 35 | [DNV - Oil & Gas](https://www.tamtam.ai/c/dnv-oil-and-gas) (dnvgl.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 | π³π΄ HΓΈvik | 333 | 1864 |
| 36 | [VIEW Group Norge](https://www.tamtam.ai/c/view-group-norge) (viewgroup.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 | π³π΄ Oslo | 331 | 2004 |
| 37 | [Eiendomshuset Malling & Co](https://www.tamtam.ai/c/eiendomshuset-malling-and-co) (malling.no)
This company is a prominent provider of commercial real estate services in Norway, managing a large portfolio and facilitating significant transactions | Real Estate | π³π΄ Oslo | 329 | 1964 |
| 38 | [RSM Norge](https://www.tamtam.ai/c/rsm-norge) (rsm.global)
A medium-sized audit and advisory firm in Norway, specializing in audit, tax, transactions, and providing tailored services across various industries | Financial Services | π³π΄ Oslo | 326 | 1945 |
| 39 | [The Cloud People Global](https://www.tamtam.ai/c/the-cloud-people-global) (thecloudpeople.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 | π³π΄ Oslo | 316 | |
| 40 | [Cognizant Oil & Gas](https://www.tamtam.ai/c/cognizant-oil-and-gas) (cognizant.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 | π³π΄ Fornebu | 308 | |
| 41 | [Omega AS](https://www.tamtam.ai/c/omega-as) (omega.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 β small enough to care" | Oil and Gas | π³π΄ ΓlensvΓ₯g | 307 | |
| 42 | [Tet](https://www.tamtam.ai/c/tet) (aider.no)
We specialize in accounting, advisory, and system solutions to empower decision-making for future-proof businesses, fostering development, innovation, and growth | Accounting | π³π΄ Oslo | 306 | 2007 |
| 43 | [Arribatec Group](https://www.tamtam.ai/c/arribatec-group) (arribatec.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 | π³π΄ Oslo | 294 | |
| 44 | [Miles AS](https://www.tamtam.ai/c/miles-as) (miles.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 | π³π΄ Miles AS | 273 | 2005 |
| 45 | [Geodata AS](https://www.tamtam.ai/c/geodata-as) (geodata.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 | π³π΄ Sentrum | 230 | 1989 |
| 46 | [DNV GL](https://www.tamtam.ai/c/dnv-gl) (ultradeep.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 | π³π΄ Oslo | 229 | |
| 47 | [CGI Norge](https://www.tamtam.ai/c/cgi-norge) (cginorge.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 | π³π΄ Oslo | 200 | |
| 48 | [Admento](https://www.tamtam.ai/c/admento) (admento.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 | π³π΄ Heimdal | 187 | 1978 |
| 49 | [Nord Pool](https://www.tamtam.ai/c/nord-pool) (nordpoolgroup.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 | π³π΄ Oslo | 186 | 1993 |
| 50 | [Technogarden](https://www.tamtam.ai/c/technogarden) (technogarden.no)
A company specializing in providing skilled engineering resources, recruitment services, and opportunities for skill development in various technical disciplines | Staffing and Recruiting | π³π΄ Sandvika | 184 | 2003 |
## 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 Norway
- [The largest companies in Norway](https://www.tamtam.ai/l/largest-companies-norway) (2,027)
- [Multinational companies in Norway](https://www.tamtam.ai/l/multinational-companies-norway) (556)
- [Retail chains in Norway](https://www.tamtam.ai/l/retail-chains-norway) (225)
- [Critical infrastructure operators in Norway](https://www.tamtam.ai/l/critical-infrastructure-operators-norway) (220)
- [Software Development companies in Norway](https://www.tamtam.ai/l/software-development-companies-norway) (216)
- [SaaS companies in Norway](https://www.tamtam.ai/l/saas-companies-norway) (201)
- [Government Administration companies in Norway](https://www.tamtam.ai/l/government-administration-companies-norway) (169)
- [Companies with in-house R&D in Norway](https://www.tamtam.ai/l/r-and-d-companies-norway) (162)
- [Financial services firms in Norway](https://www.tamtam.ai/l/financial-services-firms-norway) (141)
- [Public sector organisations in Norway](https://www.tamtam.ai/l/public-sector-organisations-norway) (132)
- [Manufacturers in Norway](https://www.tamtam.ai/l/manufacturers-norway) (130)
- [Professional services firms in Norway](https://www.tamtam.ai/l/professional-services-firms-norway) (116)
- [Energy companies in Norway](https://www.tamtam.ai/l/energy-companies-norway) (107)
- [IT Services and IT Consulting companies in Norway](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-norway) (103)
- [Hardware manufacturers in Norway](https://www.tamtam.ai/l/hardware-companies-norway) (102)
- [Corporate groups and holding companies in Norway](https://www.tamtam.ai/l/holding-companies-norway) (100)
- [Publicly traded companies in Norway](https://www.tamtam.ai/l/publicly-traded-companies-norway) (99)
- [Financial Services companies in Norway](https://www.tamtam.ai/l/financial-services-companies-norway) (95)
- [Education providers in Norway](https://www.tamtam.ai/l/education-companies-norway) (94)
- [Healthcare providers in Norway](https://www.tamtam.ai/l/healthcare-providers-norway) (94)
- [Companies with a mobile app in Norway](https://www.tamtam.ai/l/companies-with-mobile-app-norway) (89)
- [Subscription businesses in Norway](https://www.tamtam.ai/l/subscription-businesses-norway) (84)
- [IT services companies in Norway](https://www.tamtam.ai/l/it-services-companies-norway) (78)
- [Oil and Gas companies in Norway](https://www.tamtam.ai/l/oil-and-gas-companies-norway) (76)
## The same list elsewhere in Norway
- [Consulting firms in Oslo](https://www.tamtam.ai/l/consulting-firms-oslo) (37)
---
Source: https://www.tamtam.ai/l/consulting-firms-norway