Auðunn rauði Þorbergsson (c. 1250 – 28 January 1322) was bishop of Iceland's northern diocese of Hólar 1313–22. Auðunn was a Norwegian and was for a while a priest of Trondenes in Hålogaland (not far from Harstad in northern Norway). He later became a canon of Nidaros Cathedral, and became one of the foremost of their number, for example in their disputes with Archbishop Jǫrundr of Nidaros. Auðunn was well travelled and more than once visited the Pope in Rome. He won the esteem of the Norwegian king and was for a long time a retainer of Haakon V of Norway.