Thomas Williams of Llanidan

Thomas Williams
Member of Parliament
for Great Marlow
In office
1790–1802
Preceded byWilliam Clayton
Thomas Rich
Succeeded byPascoe Grenfell
Owen Williams
Personal details
Born13 May 1737
Llanidan, Anglesey, Wales, Great Britain
Died30 November 1802(1802-11-30) (aged 65)

Thomas Williams (13 May 1737 – 30 November 1802) was a Welsh industrialist and politician who was a member of Parliament for Great Marlow and High Sheriff of Anglesey. Doing business in copper mining and manufacturing, he campaigned against the abolition of the transatlantic slave trade and was the richest man in Wales at the time of his death.