Michael 'Mike' Smithson (born 11 May 1946) is a writer, a former Liberal Democrat politician and expert on betting on politics who in 2004 founded the website politicalbetting.com. Since January 2008 he has been the full-time editor of the site. As a result, The Daily Telegraph described him as the 33rd most influential over-50 on Twitter in 2014. He has been described as "perhaps the most influential person in the British political betting community".
Much of his early career was a BBC News journalist. From 1977 to 1982 he represented the UK's radio and television journalists on the National Executive Committee of the National Union of Journalists (NUJ).
Since 1994 he has worked as Director of Development running the fundraising for five UK universities - for the London School of Economics from 1994 to 1996, for Cambridge University from 1996 to 1999, for Oxford University from 1999 to 2005, and for the University of York from 2005 to April 2007. He also had a spell at Open University. During his university fundraising career he has overseen approaches that have led to more than £550m being raised. This included the $100m gift by James Martin to establish the James Martin 21st Century School at the University of Oxford - the largest ever single alumni donation to a UK university.
He is a former fellow of Queens' College, Cambridge and Magdalen College, Oxford.