Frithjof Olsen

Frithjof Olsen (30 November 1882 – 22 February 1922) was a Norwegian gymnast who competed in the 1906 Intercalated Games, the 1908 Summer Olympics, and the 1912 Summer Olympics.

At the 1906 Intercalated Games in Athens, he was a member of the Norwegian team, which won the gold medal in the gymnastics team event.

In 1908 he won a silver medal in the gymnastics team event with the Norwegian team. He also competed in the all-around event, but his result is unknown.

Four years later he was part of the Norwegian gymnastics team, which won the bronze medal in the gymnastics men's team, Swedish system event.

He represented Drammens TF.