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.
Absent for most of 1938 and 1939, Rafn's seat was filled by Carl Sigurd Winther and Ragnhild Rød.