The channel will air Christmas classics, new premieres and the occasional treat through until January.
In previous comings the channel has been known as True Christmas.
Channel premieres include Holiday Road Trip, Christmas With the Kranks, Silver Bells and Defending Santa.
Sony Movies Christmas will be available on Freeview, Freesat, Sky and Virgin.
The newly rebranded Sony Movies Christmas channel is part of Sony Pictures Television new movie network that also includes Sony Movies, Sony Movies Action, Sony Movies Classic and Sony Channel.