Platt, or St. Mary's Platt is a village and civil parish in the local government district of Tonbridge and Malling in Kent, England. The hamlet of Crouch (pronounced Crooch) lies within the parish. The River Bourne flows through the western part of the parish. Basted paper mill was within the parish boundary. The Anglican parish church of St Mary's dates from 1843 and stands on a hill overlooking the village centre. The architects were Whichcord and Walker of Maidstone. BBC broadcaster Adam Curtis grew up in Platt.