The New Plymouth Night Express was a passenger express train operated by the New Zealand Railways Department (NZR) that ran between Auckland and New Plymouth. It ran in various forms from 1933 until 1983, though the Express designation was lost in 1956 and later incarnations did not operate at night and terminated in Taumarunui rather than Auckland. The New Plymouth Night Express should not be confused with the New Plymouth Express that operated between New Plymouth and Wellington.