Norman Frederick Simpson (29 January 1919 – 27 August 2011) was an English playwright closely associated with the Theatre of the Absurd. To his friends he was known as Wally Simpson, in comic reference to the abdication crisis of 1936.

Born in London, Simpson studied at Emanuel School before taking a job as a bank clerk. During the Second World War he served in the Royal Artillery and Intelligence Corps, travelling to Italy, Palestine and Cyprus. Following studies at Birkbeck College for a degree in English Literature from the University of London after the war, Simpson taught English in adult education for almost 20 years.

The turning point in Simpson’s life came in 1957 when he won third prize in The Observer newspaper’s quest for new writers, headed by theatre critic Kenneth Tynan. A Resounding Tinkle premiered at the Royal Court Theatre, London, on 1 December 1957 with Nigel Davenport as Bro Paradock and Wendy Craig as Middie Paradock. Under pressure from Tony Richardson, Simpson, to his regret, truncated the play to a 50-minute one-act piece. In 1959 the first complete production of the two-act version was performed by the Cambridge Theatre Actors, under the direction of John Bird with Peter Cook and Eleanor Bron in the leading roles. The Cambridge production toured briefly to the Royal Court, on 15 March 1960; but the theatre only belatedly staged its own production of the two-act original on 17 January 2006.

A Resounding Tinkle typifies Simpson’s aversion to plot and establishes his talent for memorable one-liners and non-sequiturs. As with all of his subsequent work, the play demands absolutely straight delivery from actors. Such an approach fosters a conviction within the audience that the characters are living in a form of reality, where the formation of a government can be arranged via door-to-door enquiries. The extraordinary and impossible are treated as perfectly rational everyday events. This comic balance is recognised as a major influence on the early work of Peter Cook, particularly the E. L. Wisty monologues.

Many comparisons have been drawn to the work of key absurdist playwright Eugène Ionesco. However, Simpson denied any link, adding that he had never even heard of the writer when he commenced a career in nonsense. In his own view, the valid literary parallels are with Lewis Carroll, James Thurber and P. G. Wodehouse.

Simpson’s early work must also be viewed in its cultural context. BBC Radio's The Goon Show was widely admired, bringing surrealism to the masses for the first time. Plays such as A Resounding Tinkle arguably gentrified the idiom for London’s theatregoers, and with them the highbrow elite.

A close relationship between Simpson and the Royal Court continued after Tinkle, encompassing the plays The Hole (1958), his key work One Way Pendulum (1959) and The Cresta Run (1965). He wrote The Form (1961) for the Arts Theatre, and contributed to the West End revues One To Another (1959), One Over The Eight (1961) and On The Avenue (1961), which variously involved Peter Cook, John Mortimer, Harold Pinter, Beryl Reid and Kenneth Williams.

Following a long break from substantial theatre writing, Simpson returned to the Royal Court in 1972 with Was He Anyone?, which formed the basis of Harry Bleachbaker, a novel published in 1976.