William Cuthbertson "Billy" Wolfe (22 February 1924 – 18 March 2010) was a Scottish accountant, manufacturer and Scottish National Party politician. He was the National Convenor (leader) of the Scottish National Party (SNP) from 1969-79, playing a central role in the transformation of the SNP into a modern, progressive political movement, and in the development of the SNP’s social democratic political philosophy.