Øystein Kvaal Østerbø (born 7 July 1981)[2] is a Norwegian orienteering and ski-orienteering competitor.

[1] Østerbø finished third overall at the 2004 Orienteering World Cup, with a total score of 207 points (same score as Russian Andrey Khramov who finished second).

[4] He received a bronze medal in relay at the European Orienteering Championships in 2006 in Otepää.

In 2008 in Ventspils he made a small mistake that cost him the medal in the sprint distance, where he finished 8th but missed the bronze medal by only eleven seconds.

[7] Østerbø participated on the Norwegian team that received a silver medal at the World Ski Orienteering Championships in 2004, together with Anders Hauge, Eivind Tonna and Tommy Olsen.