|Was||Gymnast Athlete Artistic gymnast|
|Birth||15 August 1889, Ålesund, Norway|
|Death||26 July 1954 (aged 64 years)|
Wilhelm Marius Bakke Steffensen (15 August 1889 – 26 July 1954) was a Norwegian gymnast who competed in the 1920 Summer Olympics. He was part of the Norwegian team, which won the gold medal in the gymnastics men's team, free system event. He was born in Aalesund, and represented the club Aalesunds TF.