BIZTRAC BETA

Largest companies by revenue in Faglig, vitenskapelig og teknisk tjenesteyting

Ranked by the most recently reported operating revenue.

Together the 100 companies on this list account for NOK 174.6bn. Top of the list is DNV AS with NOK 13.3bn, ahead of NORCONSULT ASA. Oslo has the most companies on the list (63).

# Company Amount
1 DNV AS org.nr 945748931 · Bærum, Akershus · Active NOK 13.3bn 2 NORCONSULT ASA org.nr 963865724 · Bærum, Akershus · Active NOK 9.2bn 3 NORCONSULT NORGE AS org.nr 962392687 · Bærum, Akershus · Active NOK 6.4bn 4 AUTOSTORE AS org.nr 974533014 · Vindafjord, Rogaland · Active NOK 5.6bn 5 SIEMENS ENERGY AS org.nr 915826946 · Oslo, Oslo · Active NOK 5.5bn 6 MULTICONSULT NORGE AS org.nr 918836519 · Oslo, Oslo · Active NOK 5.2bn 7 BDO AS org.nr 993606650 · Oslo, Oslo · Active NOK 5.2bn 8 AIRTHINGS AS org.nr 993092045 · Oslo, Oslo · Active NOK 4.8bn 9 PRICEWATERHOUSECOOPERS AS org.nr 987009713 · Oslo, Oslo · Active NOK 4.2bn 10 ERNST & YOUNG AS org.nr 976389387 · Oslo, Oslo · Active NOK 4.1bn 11 PGS GEOPHYSICAL AS org.nr 960563085 · Oslo, Oslo · Active NOK 3.9bn 12 SWECO NORGE AS org.nr 967032271 · Oslo, Oslo · Active NOK 3.7bn 13 DELOITTE AS org.nr 980211282 · Oslo, Oslo · Active NOK 3.4bn 14 KPMG AS org.nr 935174627 · Oslo, Oslo · Active NOK 3.2bn 15 SINTEF AS org.nr 919303808 · Trondheim, Trøndelag · Active NOK 3.0bn 16 DENTSU NORGE AS org.nr 927445875 · Oslo, Oslo · Active NOK 2.8bn 17 SIEMENS AS org.nr 923009108 · Oslo, Oslo · Active NOK 2.4bn 18 COWI AS org.nr 979364857 · Oslo, Oslo · Active NOK 2.4bn 19 REACH SUBSEA AS org.nr 993252263 · Haugesund, Rogaland · Active NOK 2.3bn 20 RAMBØLL NORGE AS org.nr 915251293 · Oslo, Oslo · Active NOK 2.3bn 21 WPP MEDIA NORWAY AS org.nr 991045449 · Oslo, Oslo · Active NOK 2.2bn 22 ASPLAN VIAK AS org.nr 910209205 · Bærum, Akershus · Active NOK 1.9bn 23 ADVOKATFIRMAET THOMMESSEN AS org.nr 957423248 · Oslo, Oslo · Active NOK 1.9bn 24 FLOATEL OPERATIONS AS org.nr 927672863 · Oslo, Oslo · Active NOK 1.9bn 25 TGS ASA org.nr 976695372 · Oslo, Oslo · Active NOK 1.8bn 26 WIKBORG REIN ADVOKATFIRMA AS org.nr 916782195 · Oslo, Oslo · Active NOK 1.7bn 27 SIEMENS MOBILITY AS org.nr 919366060 · Oslo, Oslo · Active NOK 1.7bn 28 MULTIKLIENT INVEST AS org.nr 971171537 · Oslo, Oslo · Active NOK 1.6bn 29 SLB CAPTURI NORWAY AS org.nr 925200654 · Bærum, Akershus · Active NOK 1.6bn 30 ADVOKATFIRMAET BAHR AS org.nr 919513063 · Oslo, Oslo · Active NOK 1.6bn 31 AZETS INSIGHT AS org.nr 983338917 · Oslo, Oslo · Active NOK 1.6bn 32 CGG SERVICES (NORWAY) AS org.nr 979905483 · Oslo, Oslo · Active NOK 1.5bn 33 PUBLICIS COMMUNICATIONS NORWAY AS org.nr 985087776 · Oslo, Oslo · Active NOK 1.5bn 34 AFRY NORWAY ADVISORY AS org.nr 883889762 · Oslo, Oslo · Active NOK 1.5bn 35 AIBEL SEATRIUM CONSORTIUM ANS org.nr 823114052 · Haugesund, Rogaland · Active NOK 1.5bn 36 VML MAP NORWAY NUF org.nr 812903322 · Sarpsborg, Østfold · Active NOK 1.4bn 37 OMD AS org.nr 992451645 · Oslo, Oslo · Active NOK 1.4bn 38 ADVOKATFIRMAET WIERSHOLM AS org.nr 981371593 · Oslo, Oslo · Active NOK 1.4bn 39 THE BOSTON CONSULTING GROUP NORDIC AB NUF org.nr 991661557 · Oslo, Oslo · Active NOK 1.3bn 40 NORCE RESEARCH AS org.nr 919408049 · Bergen, Vestland · Active NOK 1.3bn 41 FUGRO NORWAY AS org.nr 969059789 · Oslo, Oslo · Active NOK 1.3bn 42 HEAD ENERGY CONSULTING AS org.nr 997156765 · Bergen, Vestland · Active NOK 1.2bn 43 AIDER AS org.nr 922633452 · Oslo, Oslo · Active NOK 1.1bn 44 INSTITUTT FOR ENERGITEKNIKK STI org.nr 959432538 · Lillestrøm, Akershus · Active NOK 1.1bn 45 ONET TECHNOLOGIES ND NORWAY NUF org.nr 933337855 · · Active NOK 1.1bn 46 ELEMENT LOGIC AS org.nr 982519292 · Ullensaker, Akershus · Active NOK 1.1bn 47 ECONNECT ENERGY AS org.nr 999017762 · Oslo, Oslo · Active NOK 1.1bn 48 DNV BUSINESS ASSURANCE NORWAY AS org.nr 959627606 · Bærum, Akershus · Active NOK 1.1bn 49 TONO SA org.nr 971435038 · Oslo, Oslo · Active NOK 1.1bn 50 PXGEO NORWAY AS org.nr 929120302 · Oslo, Oslo · Active NOK 1.1bn 51 IKM CONSULTANTS AS org.nr 981403800 · Sola, Rogaland · Active NOK 1.0bn 52 CHIESI PHARMA AB FILIAL NORGE NUF org.nr 922884889 · · Active NOK 1.0bn 53 TRY AS org.nr 980129942 · Oslo, Oslo · Active NOK 1.0bn 54 GE POWER NORWAY AS org.nr 980402274 · Oslo, Oslo · Active NOK 995.9m 55 SANCO HOLDING AS org.nr 979126387 · Sande, Møre og Romsdal · Active NOK 949.8m 56 SEAONICS AS org.nr 997012461 · Ålesund, Møre og Romsdal · Active NOK 923.7m 57 RYSTAD ENERGY AS org.nr 887448892 · Oslo, Oslo · Active NOK 915.4m 58 PURAC NUF org.nr 893497242 · · Active NOK 893.4m 59 SINTEF OCEAN AS org.nr 937357370 · Trondheim, Trøndelag · Active NOK 880.5m 60 TGS TITANS AS org.nr 998167000 · Oslo, Oslo · Active NOK 878.0m 61 WSP NORGE AS org.nr 881894742 · Oslo, Oslo · Active NOK 848.2m 62 SPAREBANK 1 REGNSKAPSHUSET SMN AS org.nr 936285066 · Trondheim, Trøndelag · Active NOK 845.6m 63 WAL MEDIA AS org.nr 931605690 · Oslo, Oslo · Active NOK 840.2m 64 METIER AS org.nr 917807590 · Oslo, Oslo · Active NOK 822.5m 65 LIVE NATION NORWAY AS org.nr 982031834 · Oslo, Oslo · Active NOK 819.2m 66 NORGES GEOTEKNISKE INSTITUTT AS org.nr 932089114 · Oslo, Oslo · Active NOK 811.7m 67 SINTEF ENERGI AS org.nr 939350675 · Trondheim, Trøndelag · Active NOK 801.6m 68 ERNST & YOUNG ADVOKATFIRMA AS org.nr 984328796 · Oslo, Oslo · Active NOK 801.2m 69 AIBEL PTE LTD NUF org.nr 993340456 · Sandnes, Rogaland · Active NOK 788.7m 70 TECHOUSE AS org.nr 984207565 · Sandnes, Rogaland · Active NOK 784.9m 71 ADVOKATFIRMAET HAAVIND AS org.nr 986420177 · Oslo, Oslo · Active NOK 783.7m 72 EYVI AS org.nr 922541531 · Tønsberg, Vestfold · Active NOK 777.7m 73 ROVOP LIMITED org.nr 916876785 · · Active NOK 771.7m 74 SCANSHIP AS org.nr 991036164 · Tønsberg, Vestfold · Active NOK 758.0m 75 ALL THINGS LIVE NORWAY AS org.nr 996170780 · Oslo, Oslo · Active NOK 754.1m 76 SANDS ADVOKATFIRMA AS org.nr 935597404 · Oslo, Oslo · Active NOK 749.2m 77 HRP AS org.nr 988889245 · Oslo, Oslo · Active NOK 745.1m 78 ANICURA AS org.nr 911627604 · Oslo, Oslo · Active NOK 742.1m 79 VENI METERING AS org.nr 980405540 · Drammen, Buskerud · Active NOK 735.9m 80 DELOITTE ADVOKATFIRMA AS org.nr 994116177 · Oslo, Oslo · Active NOK 732.6m 81 GOODTECH AS org.nr 984892071 · Oslo, Oslo · Active NOK 726.5m 82 TRY SCHJÆRVEN MEDIA AS org.nr 932491591 · Oslo, Oslo · Active NOK 726.5m 83 NOFIMA AS org.nr 989278835 · Tromsø, Troms · Active NOK 710.7m 84 MCKINSEY & COMPANY INC NORWAY norsk avdeling av utenlandsk foretak NUF org.nr 974787407 · Oslo, Oslo · Active NOK 706.3m 85 ADVOKATFIRMAET SELMER AS org.nr 920969798 · Oslo, Oslo · Active NOK 706.1m 86 CMS KLUGE ADVOKATFIRMA AS org.nr 913296117 · Stavanger, Rogaland · Active NOK 699.6m 87 NORGES SJØMATRÅD AS org.nr 988597627 · Tromsø, Troms · Active NOK 686.1m 88 ABL GROUP NORWAY AS org.nr 962238742 · Oslo, Oslo · Active NOK 684.8m 89 PIXII AS org.nr 920652964 · Kristiansand, Agder · Active NOK 684.5m 90 STIFTELSEN NORSK INSTITUTT FOR NATURFORSKNING NINA org.nr 950037687 · Trondheim, Trøndelag · Active NOK 667.7m 91 AFRY NORWAY AS org.nr 915229719 · Oslo, Oslo · Active NOK 656.0m 92 TGS OPERATIONS AS org.nr 911689324 · Oslo, Oslo · Active NOK 648.2m 93 ADVOKATFIRMAET ARNTZEN AS org.nr 982409705 · Oslo, Oslo · Active NOK 641.8m 94 ODFJELL ENGINEERING AS org.nr 991491252 · Bergen, Vestland · Active NOK 632.0m 95 NORSK OLJEVERNFORENING FOR OPERATØRSELSKAP org.nr 971454075 · Sandnes, Rogaland · Active NOK 623.5m 96 VIEW GROUP AS org.nr 987260335 · Oslo, Oslo · Active NOK 612.0m 97 MEDIABRANDS AS org.nr 861869962 · Oslo, Oslo · Active NOK 599.9m 98 JCDECAUX NORGE AS org.nr 976555988 · Oslo, Oslo · Active NOK 594.7m 99 VOITH HYDRO AS org.nr 980982637 · Oslo, Oslo · Active NOK 594.1m 100 ECOHZ AS org.nr 985040567 · Oslo, Oslo · Active NOK 589.7m
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Source

Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.

The list is ranked on the most recently reported financial figures. See method and caveats below.

These lists show actual registered figures from public sources (the Brønnøysund registers). They are not an assessment of creditworthiness, solidity or suitability as a customer, supplier or investment. Figures are for the most recently reported financial year.

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