The OAG of Norway is involved in the audit of several international organisations.

• European Free Trade Association (EFTA) Surveillance Authority
• EFTA Court
• EFTA Secretariat
• Interpol
• European Molucuar Biology Laboratory
• International renewable energy agency
• Nordic optical telescope scientific association
• NATO's international board of auditors (member)

Secondments

Secondments in other SAIs, amongst England, Denmark and Australia, or International Organisations such as European Court of Auditors (ECA) or the EFTA Surveillance Authority (ESA) are important for enlarging the network of professional contacts and skills-development of the individual employee of the OAG Norway.

The Office of the Auditor General of Norway has also hosted secondees from other SAIs.