William Macadam (3 November 1783 – 1853
) was an industrialist, a burgess and bailie (magistrate) of Glasgow.
He owned a weaving mill and calico printing works in Kilmarnock near Glasgow.
He was the patriarch of a small dynasty of chemical scientists including his sons William Macadam, John Macadam and Stevenson Macadam, grandsons William Ivison Macadam and Stevenson J.