Martin Donisthorpe Armstrong (2 October 1882 – 24 February 1974) was an English writer and poet, known for his stories. He was born in Newcastle upon Tyne, and educated at Charterhouse and Pembroke College, Cambridge. During World War I he volunteered with the British Army and served in France as a Private in the Artists' Rifles. He was commissioned into the 8th Battalion Middlesex Regiment, T.F. in 1915 and promoted to the rank of Lieutenant in 1916. He was included in the final Georgian Poetry anthology.