Lieutenant-General Sir John Fryer, KCB, (1838-28 January 1917) was a British Army officer. After studying at Exeter College, Oxford. he entered the Army in 1860 as a cornet in The Carabiniers. He rose to the rank of lieutenant-colonel in the regiment, and commanded it from 1877 to 1882. His period of command included the regiment's operations in Afghanistan during the Second Anglo-Afghan War. He was made a Knight Commander of the Bath in 1903.