Kilnsea is a village in the civil parish of Easington, in the East Riding of Yorkshire, England, in an area known as Holderness.

It is situated approximately 2 miles (3 km) south of the village of Easington, on the north bank of the Humber Estuary.

[2] East of Kilnsea is the Grade II listed First World War concrete acoustic mirror used as an early warning device.

The parish church, dedicated to Saint Helen, was close to the cliff and in a "state of dilapidation" and "dangerous condition".

Repairs were considered useless with the expectation that the sea, which had already swept away the graveyard, would take the church "in a short time".