Pors Fotball is a Norwegian football club from Porsgrunn, currently playing in the 2. divisjon.

Notable former players include Jan Halvor Halvorsen and Erik Pedersen.

The club was founded on 25 May 1905 under the name Lyn, and changed its name to IF Pors in 1914 because the original name was already in use.

The team has had unsuccessful bids for promotion to the top division in 1972, 1979, 1981 and 1983.

Concurrent with the 1994 name change the club entered into a still ongoing elite-level athletics partnership with the other and dominant Grenland football club, Odd Grenland.