Colonel Richard George Southey CB CMG (1844–1909) was a South African colonial military commander. His father, Sir Richard Southey, was a high-ranking Cape civil servant. Southey was commissioned into the British Army's 10th Foot (later the Lincolnshire Regiment). He purchased a Lieutenantcy in 1867 and was promoted Captain in 1877. He served in the Far East before returning to South Africa. After serving in the 9th Frontier War (1877–1878), he transferred to the new Defence Department, and commanded the Cape Mounted Yeomanry. He served in the Basuto Gun War in Basutoland (1880–1881). He retired from the British Army with the honorary rank of Major in 1883.