Bellister Castle is a National Trust owned castellated 19th-century mansion house attached to the ruinous remains of a 14th-century tower house, near Haltwhistle, Northumberland, England.

[1] The house is leased as a private residence and not open to the public.

The Blenkinsop family sold their estates including Bellister in 1697 and the castle was thereafter held by several different owners.

A substantial rebuild by architect John Dobson in 1826 created an imposing castellated east front and further alterations took place in 1890 and in 1905 following serious fire damage in 1901.

[2] The older parts of the property were allowed to fall into decay and remain ruinous.