Olavsfestdagene (initiated 1962 under the name Olavsdagene) is a church and cultural festival held in Trondheim around Olsok every year.

There are also historical markets with games, jugglers and trade in the courtyard, and a plethora of activities for children and youth, including treasure hunts, music workshop and stone carving.

[1] In 2015 the Olavsfestdagene takes place in the period July 28 - August 2, and are visited by the international artist Sting.

Olavsfestdagene is one out of four junction festivals (knutepunktfestivaler) with national status in Norway, and has the task of ensuring the church fete celebration in Nidaros Cathedral and the worship of Olav.

Petter Myhr, former director at the popular music museum Rockheim, replaced her in a fixed term position September 1, 2013.