(George) Neville Watson (31 January 1886 - 2 February 1965) was an English mathematician, a noted master in the application of complex analysis to the theory of special functions. His collaboration on the 1915 second edition of E. T. Whittaker's A Course of Modern Analysis (1902) produced the classic Whittaker & Watson text.

His Treatise on the theory of Bessel functions (1922) was a virtuoso display, in particular in the asymptotic expansions of Bessel functions (the expansion of

J_ν(ν)

being of a Kama Sutra standard of contortion). It also became a classic.

He subsequently spent many years on Ramanujan's formulae in the area of complex multiplication and class numbers. This work was later taken up by other experts. His interests included solvable cases of the quintic equation

He was educated at St Paul's School, as a pupil of F. S. Macaulay, and Trinity College, Cambridge. There he encountered Whittaker, though their overlap was only two years. He became Professor at the University of Birmingham in 1918, where he remained until 1951.