Idrettsforeningen Skarp is a Norwegian association football club from Tromsø, which currently plays in the Third Division, the fourth tier of Norwegian football.

The club was founded 30 June 1919 and its colors are black and white.

The men's team played in the Second Division for many years, but was relegated after the 2008 season.

In 2010 it contested a playoff to win promotion, and succeeded by beating Kirkenes IF 7–4 on aggregate.

[3] Kaare Nerdrum also won a bronze medal in the 800 metres in 1930.