William Kidston (29 April 1852 – 4 June 1929) was a Scotland international rugby union player.
He was called up for the Glasgow District side for the world's first provincial match, the 'inter-city' against Edinburgh District on 23 November 1872.
He was a noted businessman and philanthropist and was involved in funding the Helensburgh Town Mission.
A chairman of A.G. Kidston & Co. - an iron and steel merchant firm - he later became involved in insurance and banking.
The Prime Minister Bonar Law was his cousin.