| Clubname: | Fredrikstad IF |
| Fullname: | Fredrikstad Idrettsforening |
| Founded: | 4 September 1896 |
Fredrikstad Idrettsforening is a Norwegian athletics club from Fredrikstad, founded on 4 September 1896.
As a stadium the club uses the Sentralidrettsanlegget in Lisleby, a borough of Fredrikstad. They hosted the Norwegian athletics championships in 2003.
Its most prominent members are Mette Bergmann and Tor Øivind Ødegård.