North Killingholme is a small village and civil parish in North Lincolnshire, England. It is situated on the southern bank of the Humber estuary northwest of Grimsby; to the south is the village and civil parish of South Killingholme. The harbour of North Killingholme Haven, and the Humber Sea Terminal (2000–) are in the northern part of the parish, on the banks of the Humber estuary. The Lindsey Oil Refinery (1968–), and the Killingholme A and Killingholme B power stations (1990s–) are located in the parish, northeast of the village.