James Iritoka Tainui
- Born 28 November 1894, Arahura, West Coast, New Zealand
- Died details of death unknown
- Last rank Private
- Service number 19362
- Served In Māori Contingent, New Zealand Expeditionary Force
- Next of Kin Mrs Ema Tainui (mother), Arahura, Hokitika
- Pre-war occupation Sawmiller, Blackball Coal Company
- Enlisted14 August 1916, Narrow Neck Camp
- Periods of serviceTotal service of 15 days
- Discharged26 August 1916, medically unfit for active service, although fit for employment in civil life