John Koruarua
- Born 15 October 1894, Leeston, Canterbury, New Zealand
- Died details of death unknown
- Last rank Private
- Service number 16/968
- Served In 2nd Māori Contingent, A Company
- Next of Kin Mrs Koruarua (mother), Timaru, New Zealand
- Pre-war occupation Labourer for Public Works
- ReligionChurch of England (Anglican)
- Enlisted6 August 1915, Wellington
- Embarkationaboard HMNZT 29 Waitemata, departed 18 September 1915, Wellington, disembarked 26 October 1915, Suez, Egypt
- Theatres of operationEgyptian 1915-1916
- Periods of service180 days in New Zealand and 134 days overseas in Egypt. Total service of 314 days
- Returned to New Zealandaboard Hospital Ship Willochra, 29 January 1916
- Discharged14 June 1916
- Awarded1914-15 Star
*NB British War Medal and Victory Medals were issued by admiralty for subsequent service with Naval Transport Service.