Robert Rafn (27 February 1878 – 1964) was a Norwegian businessperson and politician for the Conservative Party. He was born in Porsgrund as a son of shipmaster Hans Christian Rafn (1833–1899) and Hanna Annette Halvorsen (1847–1939). He took technical education in Norway in 1895, and graduated in 1898 from Technicum Mittweida. From 1899 to 1905 he worked as an assistant of Thomas A. Edison in Orange, New Jersey. He later worked as a chemist at a works in Berlin before running his own company named Irradiar in Nuremberg until 1915. He returned to Norway and settled in Moss. He was a manager at Moss Melkefabrik from 1916 to 1924 and technical director at Moss Aktiemølle from 1925 to 1945. He was also a supervisory council member of Hafslund. After 1945 he worked as a consultant.