by:Larm is a music festival and conference held annually at different locations in Norway since 1998. Since 2008 the festival has been held in Oslo. The 28th edition of by:Larm will be held September 11-13th 2025.

by:Larm consists of two parts: a festival and a conference. The conference is a meeting place for the Nordic and international music industries. A series of lectures, seminars and debates are held during the day. The festival concerts take place at night and are open to the public. Their main focus is to present artists that are on the verge of success, either in their homelands or internationally.