Ørjan Berg (born 20 August 1968) is a Norwegian former professional footballer who played as a midfielder.

Berg retired at the end of the 2006 season, having played for Bodø/Glimt, Wettingen, TSV 1860 Munich, Basel and Rosenborg.

After two seasons at Rosenborg, Berg was sold to Swiss club FC Wettingen during the winter break of the 1990–91 Nationalliga A. Berg played the first half of the 1991–92 Nationalliga A season with Wettingen, but could not save the team from slumping to the bottom of the league table.

During Basel's 1993–94 season, under new head-coach Claude Andrey, his teammates were the likes of Swiss international goalkeeper Stefan Huber, defenders Massimo Ceccaroni, Marco Walker and Samir Tabakovic, the midfielders Mario Cantaluppi, Martin Jeitziner, Admir Smajić and Reto Baumgartner and the Swiss international strikers Dario Zuffi and Philippe Hertig.

The team was now back in the top division, Berg played for three seasons losing a cup final against Tromsø IL in 1996.

However, it became increasingly clear that his injury would never be completely healed, and he decided to terminate his contract a year early.

He got a second chance when Norway got Nils Johan Semb as coach in 1998 and Berg played on the national team again 10 years after his debut.