There have been six baronetcies created for persons with the surname Smyth (as distinct from Smythe and Smith), two in the Baronetage of England, one in the Baronetage of Great Britain, one in the Baronetage of Ireland and two in the Baronetage of the United Kingdom. One creation is extant as of 2010.
The Smyth Baronetcy, of Redcliff in the County of Buckingham, was created in the Baronetage of England on 10 May 1661 for William Smyth, a staunch Royalist, Governor of Hillersden and a member of the Long Parliament. The title became extinct on the death of the second Baronet in 1732.
The Smyth Baronetcy, of Upton in the County of Essex, was created in the Baronetage of England on 30 March 1665 for Robert Smyth of Upton, West Ham, Essex. He was succeeded by his eldest son, the second Baronet. The latter's eldest son, the third Baronet, sat as Member of Parliament for Andover. The fifth Baronet represented Cardigan in the House of Commons. The sixth Baronet was Member of Parliament for Colchester. The title became extinct on his death in 1852.
James, second son of the first Baronet, was father of the first Baronet of Isfield (see below).
The Smyth Baronetcy, of Isfield in the County of Sussex, was created in the Baronetage of Great Britain on 2 December 1714 for James Smyth. His father, Sir James Smyth (1633–1706), Lord Mayor of London, was the second son of the first Baronet of Upton (see above). The third Baronet was aide de camp to General Wolfe at the Battle of Quebec. The title became extinct on his death in 1811.