Carl Sigurd Winther (6 October 1887 – 22 December 1962) was a Norwegian businessperson and politician for the Conservative Party.
He was born in Fredrikshald as a son of businessperson Christian Winther (1859–1939) and Anna Høstgaard (1859–1931).
He took the middle school exam in 1903, and also had training as a petty officer.
He was a deputy representative to the Parliament of Norway from the Market towns of Østfold and Akershus counties during the term 1937–1945, and met regularly for Robert Rafn in 1938 and 1939.
[1] He was a board member of the Norwegian Gymnastics Federation from 1922 to 1925, and chaired the sports club TIL National after the Second World War.