Audun Hultgreen Weltzien (born 3 September 1983) is a Norwegian orienteering competitor.

He competed at the 2009 World Orienteering Championships in Miskolc, where he placed 19th in the middle distance, and participated on the Norwegian relay team.

[1] In 2003 he won a silver medal in the relay at the Junior World Orienteering Championships.

[2] He represents the club IL Tyrving.

This biographical article about a Norwegian orienteer is a stub.