Grey Granite is a 1934 novel by Scottish writer Lewis Grassic Gibbon. It is the last part of the trilogy A Scots Quair. The central character is a young woman, Chris Guthrie, growing up in a farming family in the fictional parish of Kinraddie in the Mearns at the start of the 20th century.

Grey Granite takes the story of Chris Guthrie further. She moves to the fictional city of Duncairn (previously referred to in Cloud Howe as Dundon). In the Introduction, Gibbon points out that Dundon/Duncairn is based neither on Aberdeen nor on Dundee (as some reviewers had surmised) but is "merely the city which the inhabitants of The Mearns (not foreseeing my requirements in completing my trilogy) have hitherto failed to build". An important character is her son by her first marriage, Ewan Tavendale, Jr., who becomes a left-wing political activist.

Lewis Grassic Gibbon was the pseudonym of James Leslie Mitchell (13 February 1901 - 7 February 1935), a Scottish writer. He was best known for A Scots Quair, a trilogy set in the north-east of Scotland in the early 20th century, of which all three parts have been serialised on BBC television.