Oh No It's Selwyn Froggitt, known as Selwyn in its final series, is a British television sitcom that was first broadcast on ITV from 1974 to 1978. Initially created by Roy Clarke from a concept by Bill Maynard, most of the series was written by Alan Plater. Set in the fictional Yorkshire town of Scarsdale, it starred Maynard as Selwyn Froggitt, a hapless but good-natured council labourer, handyman and working men's club secretary.

The programme, produced by Yorkshire Television, was a major ratings success, with Froggitt's catchphrase "magic!" becoming widely known in the United Kingdom, and making Bill Maynard a nationwide household name. It ran for four series, the last of which carried the title Selwyn and featured only Maynard reprising his role in the new location of a holiday camp.