This article summarises the relationships between various members of the family of Lowther baronets.
- Sir Christopher Lowther
- Sir John Lowther, of Lowther (d. 1637)
- Sir John Lowther, 1st Baronet (1605–1675)
- John Lowther (of Hackthorpe)
- Richard Lowther (died 1703)
- Ralph Lowther
- Sir Christopher Lowther, 1st Baronet
- William Lowther (of Swillington, elder)
- William Lowther (of Swillington, younger)
- Sir William Lowther, 1st Baronet (1663-1729)
- Christopher Lowther (d. 1718)
- Sir William Lowther, 1st Baronet (1707-1788)
- William Lowther, 1st Earl of Lonsdale
- William Lowther, 2nd Earl of Lonsdale
- Francis William Lowther (illegitimate)
- Henry Cecil Lowther
- William Lowther, 2nd Earl of Lonsdale
- Sir John Lowther, 1st Baronet (1759-1844)
- William Lowther, 1st Earl of Lonsdale
- Sir William Lowther, 1st Baronet (1707-1788)
- William Lowther (of Swillington, younger)
- Sir John Lowther, 1st Baronet (1605–1675)
- Robert Lowther (d. 1655)
- Sir John Lowther, of Lowther (d. 1637)