The 1909 Norwegian Football Cup was the eighth season of the Norwegian annual knockout football tournament. The tournament was open for 1909 local association leagues (kretsserier) champions, except in Smaalene and Kristiania og omegn where a separate cup qualifying tournament was held. Lyn won their second consecutive title.
|colspan="3" style="background-color:#97DEFF"|18 September 1909
|colspan="3" style="background-color:#97DEFF"|25 September 1909