William MacLeod Speirs (8 March 1952 – 23 September 2009) was a Scottish trade union leader, a socialist and internationalist.
He went to school at the John Neilson Institution in Paisley and took a first class honours degree in Politics as the University of Strathclyde.
After graduating he continued with research at university and then worked as a lecturer at Cardonald College.
Bill Speirs began his career with the Scottish Trades Union Congress when he was appointed to the post of Assistant Secretary in 1978.
With his first wife Lynda, Bill had two children: a daughter, Jaki; and a son, David.