Coombe Keynes is a hamlet, civil parish and depopulated village in the Purbeck district of Dorset, England.

The Domesday Book of 1086 records it as Cume, held by Gilbert de Magminot, Bishop of Lisieux.

[2] The name Keynes derives from the later Lords of the Manor, the de Cahaignes family, who also held Tarrant Keyneston.

The lost part of the settlement was immediately east of the parish church.

[5] It was deconsecrated in 1974 and is now used as a secular function room managed by the Coombe Keynes Trust.