Ole Landmark (June 15, 1885 – February 7, 1970) was a Norwegian architect.
He was the son of Johan Petersberg Landmark (1848-1926) and Monsine Dorothea Døsen (1852-1924).
He attended the Trondheim Cathedral School and was educated at the Trondhjems Tekniske Læreanstalt, a predecessor of the Norwegian University of Science and Technology.
He also made several trips to study abroad, including to Sweden, Germany and France.
[2] He was employed as an assistant for architects Schak Bull and Einar Oscar Schou.