There have been seven baronetcies created for members of the Lowther family, one in the Baronetage of Nova Scotia, two in the Baronetage of England, two in the Baronetage of Great Britain and two in the Baronetage of the United Kingdom. Two of the creations are extant as of 2008.
The Lowther Baronetcy, of Lowther in the County of Westmorland, was created in the Baronetage of Nova Scotia in circa 1638 for John Lowther, of Lowther Hall, Westmorland. For more information on this creation, which became extinct in 1802, see Earl of Lonsdale.
The Lowther Baronetcy, of Whitehaven in the County of Cumberland, was created in the Baronetage of England on 11 June 1642 for Christopher Lowther. He was the younger brother of the first Baronet of Lowther. He was succeeded by his son, the second Baronet. He sat as Member of Parliament for Cumberland. After his death the title passed to his elder son, the third Baronet. He was disinherited by his father. He was succeeded by his younger brother, the fourth Baronet. He was a distinguished industrialist and politician. Lowther never married and on his death in 1755 the baronetcy became extinct. He left his vast estates to his cousin Sir William Lowther, 3rd Baronet, of Marske (see below), and following his death to the Lowther branch (see Earl of Lonsdale).
The Lowther Baronetcy, of Marske in the County of York, was created in the Baronetage of England on 15 June 1697 for the twenty-one-year-old William Lowther, subsequently Member of Parliament for Cumberland. He was the grandson of Robert Lowther, brother of Sir John Lowther, father of the first Baronet of Lowther and of the first Baronet of Whitehaven. He was succeeded by his son, the second Baronet. He also represented Lancaster in the House of Commons. On his death the title passed to his son, the third Baronet. He served as Lord-Lieutenant of Westmorland. In 1755 he succeeded to the vast estates of his cousin Sir James Lowther, 4th Baronet, of Whitehaven (see above). However, Lowther died unmarried at an early age the following year when the baronetcy became extinct.