The Slab Boys Trilogy is a set of three plays by the Scottish playwright John Byrne. The trilogy was originally known as Paisley Patterns. The three plays which make up the trilogy are: The Slab Boys, Cuttin' a Rug, and Still Life. The trilogy tells the story of a group of young, urban, working-class Scots during the period 1957–1972. The Slab Boys Trilogy was revived in 2003 by the Traverse Theatre in Edinburgh starring Paul Thomas Hickey and Iain Robertson in the lead roles. This is the first time that the Traverse Theatre have ever done a revival and it was received to great critical success. In April 2008, the Traverse Theatre premièred Nova Scotia, the fourth part of The Slab Boys story which follows the characters of Phil, Spanky and Lucille into the 21st century.

John Patrick Byrne was a Scottish playwright, screenwriter, artist and designer. He wrote The Slab Boys Trilogy, plays which explore working-class life in Scotland, and the TV dramas Tutti Frutti and Your Cheatin' Heart. Byrne was also a painter, printmaker and scenic designer.