Lieutenant-Colonel Sir Martin Archer-Shee, DSO (5 May 1873 – 6 January 1935) was a British army officer and Conservative Party politician.
He was the son of Martin Archer-Shee and his wife Elizabeth Edith Dennistoun née Pell of New York who married in 1872 at Piccadilly. His father was a bank manager and grandson of the painter Martin Archer Shee. His half-brother was George Archer-Shee, renowned for his part in a famous court case whilst a Royal Navy cadet. .
Archer-Shee was educated at The Oratory School before entering the Royal Navy as a cadet in 1886. After two years on the training ship HMS Britannia he became a midshipman on HMS Agincourt, part of the Channel Fleet, later transferring to HMS Cleopatra. He later joined The Castaways' Club to keep in touch with his former service.
In 1890 he resigned from the navy in order to enter the Royal Military College Sandhurst and to become an officer in the British Army. He obtained a commission in the 19th Hussars, and was promoted to Lieutenant on 7 February 1897. He served in the Second Boer War 1899-1902, where he took part in operations in Natal, including the defence of Ladysmith, and in the Transvaal from July to November 1900. The award of the Distinguished Service Order (DSO) followed in November 1900 for his services during the early part of the war. In February 1902 he was wounded near Kromdraal when he captured enemy soldiers (mentioned in despatches 25 April 1902), and he was invalided home in May, shortly before the end of hostilities. Following the war he was promoted to Captain on 15 August 1902, and received the rank of brevet Major a week later. He resigned from the army in 1905.