Sir Alfred William Watson KCB FIA (11 March 1870 – 7 May 1936) was a British actuary and civil servant.

In 1917 he became Britain's first government actuary and was very influential in setting up funding from National Insurance for the newly introduced state pension.

[3] In 1903, he published an article titled Sickness and Mortality Experience (1893–97) of the Manchester Unity of Oddfellows in the Journal of the Institute of Actuaries.

[4] Watson became the first government actuary on 14 May 1917, gaining influence with the expansion of National Insurance, particularly with regard to pensions.

[3][15][17] Watson married Elizabeth Moffrey, daughter of a grand master of the Manchester Unity of Oddfellows, in June 1895.