The Nightmare Man is a science fiction drama serial transmitted by BBC Television in 1981. The four-part mini-series was adapted for television by Robert Holmes from the 1978 novel Child of Vodyanoi by David Wiltshire. It was produced by Ron Craddock (a former producer of Z-Cars) and directed by Douglas Camfield. Both Holmes and Camfield had worked extensively on Doctor Who.

The serial is set on a small Scottish island, where the population is gripped by fear following a series of savage murders and the discovery of a strange craft on the local beach.