Colin Fraser Steyn (27 November 1887 – 23 April 1959) was a lawyer and a politician in South Africa.

He served as a member in the House of Assembly, senator, and cabinet minister in the government of Jan Smuts.

He attended Greys College, but his studies were interrupted by the Second Boer War when he accompanied his father to the Natal battle fronts.

[1] He joined the National Party and after the 1915 South African general election, represented the seat of Vredefort.

He resigned from his position as Deputy Minister of Justice in 1928, and left the political life for a short period, before joining United Party in 1936 and was once again re-elected to the Parliament of South Africa in 1938.