There is one muslim student organisation at the University of Tromsø - Muslim Academia Tromsø, and you will find their web-site here. You can contact the leader: Mr.Salehin, firstname.lastname@example.org
cell: +47 46254894
There is a Muslim prayer room at the University campus in Breiviklia (see map)
For many muslims it's normal to pray salah five times a day, and the Mosalla is provided so that Muslim students and employees can practise their salah in a dignified way.