Five swimmers, including one woman, competed for Norway at the 1912 Games. It was the nation's debut in swimming. None of the Norwegian swimmers advanced to the finals, with Johnsen's sixth-place finish in his 400-metre freestyle semifinal the best result of the Games.

Ranks given for each swimmer are within the heat.

23 athletes represented Norway. It was the nation's third appearance in the sport as well as the Olympics.

Ferdinand Bie, who had originally won the silver medal in the pentathlon, was awarded gold after Jim Thorpe was disqualified. When Thorpe was reinstated in 1982, Bie retained his gold medal in the event and became co-champions with Thorpe. Bie's medal was the only one won by Norway in 1912 and was the nation's first athletics gold medal. Arne Halse, who had previously held Norway's best athletics result with a silver medal in the 1908 javelin throw, placed 7th in the javelin and 5th in the two-handed version of the event. Norway also had two fourth-place finishes, in the triple jump and team cross country.

Ranks given are within that athlete's heat for running events.

Six cyclists represented Norway. It was the first appearance of the nation in cycling. Birgir Andreasen had the best time in the time trial, the only race held, finishing 14th. Because only three Norwegian cyclists finished the time trial, the team received no ranking in the four-man team competition.

Seven fencers represented Norway, including the only Norwegian fencer who had competed in 1908. It was the second appearance of the nation in fencing. None of the Norwegian fencers were able to advance past the quarterfinal round; however, advancement to quarterfinals was itself an improvement over the results of the previous Games.

Gunnar Andersen
Einar Friis Baastad
Hans Endrerud
Charles Herlofson
Sverre Jensen
Harald Johansen
Kristian Krefting
Erling Maartmann
Rolf Maartmann
Ingolf Pedersen
Henry Reinholdt
Per Skou

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