List of Famous people born on January 31st

Brian Arthur Mikkelsen is CEO of The Danish Chamber of Commerce. He is former Minister and former member of the Conservative People's Party, and was in The Danish Parliament (Folketinget) from 21 September 1994 to 21 June 2018.

William Patrick Huizenga is an American politician serving as the U.S. Representative for Michigan's 2nd congressional district since 2011. A member of the Republican Party, he previously served in the Michigan House of Representatives from 2003 to 2009.

Rolf Järmann is a retired road bicycle racer from Switzerland, who was a professional rider from 1988 to 1999. He twice won the Amstel Gold Race during his career. He was the Swiss National Road Race champion in 1990. He also won the Tour de Pologne 1997.

Prof George Neville Watson FRS HFRSE LLD was an English mathematician, who applied 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 and Watson" text. In 1918 he proved a significant result known as Watson's lemma, that has many applications in the theory on the asymptotic behaviour of exponential integrals.