The Keith Barret Show is a spoof BBC chat show hosted by Keith Barret (Rob Brydon) who interviews celebrity couples in the hope of finding the secret to a successful marriage (though in fact many of his interviewee couples were not married; see below). It was devised by Paul Duddridge and co-written with Rob Brydon. In each programme, there are a selection of clips from venues such as speed dating or interviews with relationship experts.

Rob Brydon's character Keith first appeared on TV in the comedy series Marion and Geoff where, for most of the first series, he was oblivious to the affair between the title characters.