Newington-next-Hythe is a village in Kent, England one mile (1.6 km) west-north-west of Folkestone. It includes the hamlets of Arpinge and Beachborough. The village lies to the north of the M20 motorway and the A20 road; the Channel Tunnel complex is nearby.
The ecclesiastical parish was known as Newington-next-Hythe, the latter town being 2 1⁄2 miles (4.0 km) to the south-west; the parish church is dedicated to St Nicholas. Nearby there used to be a 13th-century Augustinian priory, founded in 1253 by Sir John Maunsell, who became a counsellor of King Henry III.
Newington was a civil parish in Elham Rural District from 1894 until 1974, and since 1974 has been part of the Shepway non-metropolitan district. In the 2001 UK census Newington had a population of 341.