I have an Italian residence permit with a Pakistani passport. Can I travel to Norway without a visa?
You can visit Norway.
As stated in Timatic, the database used by airlines:
Visa required, except for passengers with a residence permit issued by Italy for a maximum stay of 90 days
With your passport and Italian residence permit, you can visit Schengen countries, Croatia, Bosnia, Serbia, Montenegro, Albania, Kosovo, Romania, Bulgaria and Cyprus, Georgia, French overseas territories and the Dominican Republic.
If having a permanent residence permit, you can also enter Macedonia, Turkey (at Istanbul-Atatürk or Ankara Airport) and Mexico