Oskar J. W. Hansen (March 9, 1891 -September 1971) was a Norwegian-born, naturalized American sculptor. He is most associated with the design of many of the sculptures on and around the Hoover Dam.
Oskar Johan Waldemar Hansen was born at Langenes in Øksnes, Nordland, Norway. Before coming to America, he served as a merchant seaman. He later served in the United States Army. In the late 1930s or early 1940’s, Hansen built a home and artists studio on property near Ashcroft outside Charlottesville, Virginia .