Birchington-on-Sea is a village in south-east Kent, England, with a population of around 9,800. Since 1974 it has been part of the Thanet District and forms the civil parish of Birchington. It lies on the coast facing the North Sea, east of the Thames Estuary, between the seaside resorts of Herne Bay and Margate. As a seaside resort, the village is a notable tourist and retirement destination. The village's Minnis Bay is a family beach with attractions such as sailing, windsurfing, a paddling pool and coastal walking routes. Its three smaller beaches are surrounded by chalk cliffs, cliff stacks and caves.
The village was first recorded in 1240. Its parish church, All Saints', dates to the 13th century and its churchyard is the burial place of the 19th-century Pre-Raphaelite artist, Dante Gabriel Rossetti.
Birchington was part of the Isle of Thanet Rural District from 1894 until 1935 when the rural district was abolished. At this point it was transferred to Margate Urban District. At the nationwide municipal reorganization of 1974 the area became part of Thanet District and Birchington once again became a civil parish.