Under Byen is a Danish band founded in 1995 mainly by Katrine Stochholm and Henriette Sennenvaldt.

Under Byen (Danish for "Below the City") is known for producing their own unorthodox interpretation of rock. They rarely use guitars. Instead their soundscape is dominated by piano, cello, violin, electrically distorted saw, organ, drums and percussion. A somewhat different vein of rock (or pop) spiced up with jazzy, folky and classical elements. An important part of the music are also the poetic Danish lyrics which are presented to the listener by female vocals.