Kainuu Orienteering Week (KOW) is an annual Finnish, international, orienteering event held in the Kainuu region.

Kainuu Orienteering Week is organized by Kainuun Rastiviikko Association.

Measured by the number of participants, Kainuu Orienteering Week is one of the top-15 sports events in Finland and it is also one of the main events of The Finnish Orienteering Federation.

The event attracted 315 orienteers in the first year and the participant record is from 2007 when there were 4,884 orienteers in Kainuu Orinteering Week.

[2] In 2011 the first city orienteering sprint, organised through the KOW, was run.