The Mappin Baronetcy, of Thornbury in the Township of Upper Hallam in the Parish of Sheffield in the West Riding of the County of York, was a title in the Baronetage of the United Kingdom. It was created on 27 August 1886 for the factory owner and Liberal

Liberal Party (UK)

The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...

 politician Frederick Mappin

Sir Frederick Mappin, 1st Baronet

Sir Frederick Thorpe Mappin, 1st Baronet, known as Frederick Mappin was an English factory owner and Liberal politician....

. The title became extinct on the death of the sixth Baronet in 1975.

Mappin Baronets, of Thornbury (1886)

• Sir Frederick Thorpe Mappin, 1st Baronet
  Sir Frederick Mappin, 1st Baronet
  Sir Frederick Thorpe Mappin, 1st Baronet, known as Frederick Mappin was an English factory owner and Liberal politician....
  
  (1821-1910)
• Sir Frank Mappin, 2nd Baronet (1846-1920)
• Sir Wilson Mappin, 3rd Baronet (1848-1925)
• Sir Charles Thomas Hewitt Mappin, 4th Baronet (1909-1941)
• Sir Samuel Wilson Mappin, 5th Baronet (1854-1942)
• Sir Frank Crossley Mappin, 6th Baronet (1884-1975)