There are 8 bands and two artists called Damien:-
1: A hardcore/metal band from Sweden
2. A thrash metal band from Sweden
3: An indie-pop/postpunk band from Italy
4: An American classic heavy metal band
5: A one-off electronic death-metal/industrial noise project
6: A Norwegian metal band
7: A Russian sympho-metal band
8: A French musician releasing on AIR's Record Makers label.
9: A Malaysian death metal band.
10. A Croatian trance -based DJ.

Read more about Damien on Last.fm.