(John) Cathcart Wason (17 November 1848 – 19 April 1921), generally known as Cathcart Wason, was a Scottish farmer and politician who served as a Member of Parliament in two countries: first in New Zealand and then in Scotland.
He established Barrhill, a model village, and after the failure of this colonial venture, he returned to Scotland.
An unusually large man (he was over 6 feet 6 inches (1.98 m) tall), he is noted both as an innovative farmer and for having passed his time in the British House of Commons by knitting.