Industry code 69.201 · Oslo
Auditing activities in Oslo
There are 112 active companies in auditing activities in Oslo. 11 of them were registered in the last 12 months. Together they have 8,398 registered employees. The largest company is Pricewaterhousecoopers AS with 1,898 employees. The oldest, Baker Tilly Grimsrud & Co. ANS, was founded in 1958. 81% are limited companies.
- Active companies
- 112
- New in the last 12 months
- 11
- Registered employees
- 8,398
- Share of limited companies
- 81 %
The largest companies in auditing activities in Oslo
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Pricewaterhousecoopers AS | 987009713 | 1,898 | NOK 4.2 bn | 2004 |
| 2 | Ernst & Young AS | 976389387 | 1,589 | NOK 4.1 bn | 1996 |
| 3 | Kpmg AS | 935174627 | 1,453 | NOK 3.2 bn | 1984 |
| 4 | Bdo AS | 993606650 | 1,286 | NOK 5.2 bn | 2009 |
| 5 | Deloitte AS | 980211282 | 1,216 | NOK 3.4 bn | 1998 |
| 6 | Cedra Norge AS | 935416779 | 508 | NOK 88 m | 2025 |
| 7 | Forvis Mazars AS | 979605994 | 71 | NOK 134.6 m | 1998 |
| 8 | Crowe Partner Revisjon AS | 922829845 | 64 | NOK 132.1 m | 2019 |
| 9 | Vaak Revisjon Og Rådgivning AS | 987632380 | 44 | NOK 80.1 m | 2004 |
| 10 | Pkf Revisjon AS | 837084962 | 39 | – | 2026 |
| 11 | Eira Revisjon & Rådgivning AS | 990422052 | 24 | NOK 41 m | 2006 |
| 12 | Alpha Revisjon AS | 975800679 | 22 | NOK 37.3 m | 1995 |
| 13 | Unic Revisjon AS | 999327885 | 21 | NOK 44 m | 2012 |
| 14 | Revisjonsselskapet Varder AS | 983535712 | 20 | NOK 37.8 m | 2001 |
| 15 | Revisjonsfirmaet Flattum & Co AS | 894934352 | 18 | NOK 37.4 m | 2009 |
| 16 | Berge & Lundal Revisjonsselskap AS | 930443069 | 15 | NOK 38.3 m | 1978 |
| 17 | Norn AS | 936911757 | 14 | – | 2025 |
| 18 | Mpr Revisjon AS | 918494138 | 13 | NOK 30.4 m | 2017 |
| 19 | Vidi Revisjon AS | 936106439 | 11 | – | 2025 |
| 20 | Revisorhuset AS | 987610859 | 11 | NOK 29.3 m | 2004 |
| 21 | Insignis AS | 917835810 | 10 | NOK 21 m | 2016 |
| 22 | Grant Thornton Norway AS | 937363850 | 8 | – | 2026 |
| 23 | Vekst Revisjon AS | 960132734 | 8 | NOK 21.8 m | 1990 |
| 24 | Revisjonspartner AS | 967645354 | 8 | NOK 15 m | 1993 |
| 25 | Velle Revisjon AS | 992985135 | 8 | NOK 11.9 m | 2008 |
Newest companies in auditing activities in Oslo
- Wb Magnussen Consulting3 Nov 2026
- Arkanum Revisjon AS9 Sept 2026
- Benford Revisjon AS9 Jul 2026
- Revisionsbureauet AS8 Jul 2026
- Norborg Revisjon AS12 May 2026
- Frewed AS11 May 2026
- Grant Thornton Norway AS16 Mar 2026
- Pkf Revisjon AS2 Feb 2026
- Norn AS6 Jan 2026
- Lysbalanse AS18 Dec 2025
Frequently asked questions
How many companies in auditing activities are there in Oslo?
The Register of Legal Entities lists 112 active companies in auditing activities in Oslo. 11 of them were registered in the last 12 months.
Which is the largest company in auditing activities in Oslo?
Pricewaterhousecoopers AS is the largest by number of employees, with 1,898 employees. The organisation number is 987009713.
How many people work in auditing activities in Oslo?
The companies have 8,398 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 25 of the 25 largest companies have reported employees.
How long have there been companies in auditing activities in Oslo?
The oldest active company, Baker Tilly Grimsrud & Co. ANS, was founded in 1958. 81% of the companies are limited companies.
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 69.201. Figures are updated continuously.