Sir Charles William Cayzer, 3rd Baronet (6 January 1896 – 18 February 1940) was a British Conservative Party Member of Parliament (MP). He was the son of , of Gartmore, whom he succeeded in 1917. He was educated at Repton School, Oriel College, Oxford and the Royal Military College, Sandhurst, and was a Lieutenant in the 19th Royal Hussars from 1915 to 1919, serving in France from 1916 to 1918. He was re-employed at the start of World War II as Captain in the 15th/19th Hussars.