Sir William Fownes, 1st Baronet (born before 1672 – 3 April 1735) was an Anglo-Irish politician.
Fownes was the Member of Parliament for the borough of Wicklow in the Irish House of Commons between 1704 and 1713.
[1] He was High Sheriff of Wicklow in 1707 and Lord Mayor of Dublin in 1708.
[2] On 26 October 1724 he was created a baronet, of Dublin in the Baronetage of Ireland.
Upon his death he was succeeded in his title by his son, William Fownes.