The Thin Blue Line is a British sitcom which aired on BBC1 from 1995 to 1996. It was created and written by Ben Elton, and starred Rowan Atkinson. It was ranked number 34 in a poll for Britain's Best Sitcom. In September 2021, the series became available on BBC iPlayer.

The series is set in a police station in the fictional English town of Gasforth. The show sees the uniformed squad, led by Inspector Raymond Fowler (Atkinson), and the CID, led by Detective Inspector Derek Grim (David Haig), locking horns over similar, or even the same, issues while having conflicting views or methods of operations. Generally, the uniformed section triumphs over the detectives, although not without their own foibles. Although other PCs and staff other than the main characters are visible in the background, they generally have no speaking parts.