The Duncombe baronetcy, of Tangley Park in the County of Surrey, was created in the Baronetage of England on 4 February 1662 for Francis Duncombe.
Sir Philip Pauncefort-Duncombe, 1st Baronet, of Great Brickhill, was a descendant of Thomas Duncombe (16th century), whose brother Roger Duncombe was the ancestor of the Duncombe baronets of Tangley Park (see Pauncefort-Duncombe baronets).
The Duncombe baronetcy, of Highfield in the Parish of Driffield in the County of York, was created in the Baronetage of the United Kingdom on 16 May 1919 for George Duncombe, a deputy lieutenant and justice of the peace for the East Riding of Yorkshire.
He was the son of Admiral Arthur Duncombe, younger son of Charles Duncombe, 1st Baron Feversham (see Baron Feversham for earlier history of the family).
Duncombe had no surviving male issue and the title became extinct on his death in 1933.