Lieutenant Guy Greville Napier (26 January 1884 – 25 September 1915) was an English cricketer and World War I combatant. Following his death from wounds received in France, Wisden declared him "one of the best medium pace bowlers seen in the University match in his own generation". Guy Napier was educated at Marlborough College and Pembroke College, Cambridge. He was commissioned in the 35th Sikhs. While attached to the 47th Sikhs at the Battle of Loos he died of wounds on 25 September 1915.