Chain Letters was a British television game show produced by Tyne Tees and Barry & Enright Productions. The show was recorded at their City Road studios in Newcastle Upon Tyne and first broadcast on ITV in the United Kingdom from 7 September 1987 to 6 July 1990, then again from 2 January 1995 to 25 April 1997.

Three contestants competed to win money by changing letters in given words to form new words. The show's original host was Jeremy Beadle, followed by Andrew O'Connor, Allan Stewart, Ted Robbins, Vince Henderson and Dave Spikey.

A computer named Wordsworth generated words and checked their validity, and occasionally provided the host with definitions of unusual words that came up during the game.