John Ernest Parker (2 July 1871 in Plantation Vigilance, East Coast, Demerara, British Guiana – 1946 in Georgetown, Demerara, British Guiana) was a West Indian cricketer who toured with the second West Indian touring side to England in 1906.

He made his debut in important cricket for British Guiana in the 1905-06 Inter-Colonial Tournament in Trinidad.

The team for the forthcoming tour of England was decided after this tournament and surprisingly Parker was one of those chosen.

Before the tour he was described as "a slow bowler of great merit; took part in the late Intercolonial cricket matches played at Trinidad, and, although not successful in getting wickets, greatly impressed the selectors; hence his inclusion in the team"[1] and "a slow bowler of the Armstrong type, with a field placed on the on-side; a fair defensive batsman and excellent slip".

[2] He played in the next two Inter-Colonial Tournaments in 1907-08 and 1907-08 again with a complete lack of success and this marked the end of his career in important matches.