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 (1605âÂÂ1675)
- John Lowther (of Hackthorpe)
- John Lowther, 1st Viscount Lonsdale
- Richard Lowther, 2nd Viscount Lonsdale
- Henry Lowther, 3rd Viscount Lonsdale
- Anthony Lowther (of Lowther)
- William Lowther (of Hackthorpe)
- Richard Lowther (died 1703)
- Robert Lowther (elder)
- James Lowther, 1st Earl of Lonsdale
- Robert Lowther (younger)
- Ralph Lowther
- John Lowther (of Ackworth Park)
- Sir Christopher Lowther, 1st Baronet
- Sir John Lowther, 2nd Baronet
- Sir Christopher Lowther, 3rd Baronet
- Sir James Lowther, 4th Baronet
- William Lowther (of Swillington, elder)
- William Lowther (of Swillington, younger)
- Sir William Lowther, 1st Baronet (1663-1729)
- Sir William Lowther, 2nd Baronet
- 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)
- Claude Lowther
- Henry Cecil Lowther
- Henry Lowther, 3rd Earl of Lonsdale
- St George Lowther, 4th Earl of Lonsdale
- Hugh Lowther, 5th Earl of Lonsdale
- Lancelot Lowther, 6th Earl of Lonsdale
- Anthony Lowther, Viscount Lowther
- James Lowther, 7th Earl of Lonsdale
- Hugh Lowther, 8th Earl of Lonsdale
- William Lowther (diplomat)
- James Lowther, 1st Viscount Ullswater
- Christopher Lowther
- John Arthur Lowther (1910-1942)
- Nicholas Lowther, 2nd Viscount Ullswater
- Sir Gerard Lowther, 1st Baronet
- Cecil Lowther
- Sir John Lowther, 1st Baronet (1759-1844)
- Sir John Henry Lowther, 2nd Baronet
- Sir Charles Hugh Lowther, 3rd Baronet
- George William Lowther
- Sir Charles Lowther, 4th Baronet
- James Lowther (of Wilton Castle)
- Robert Lowther (d. 1655)
- Anthony Lowther (of Marske)
- Sir William Lowther, 1st Baronet (1670-1705)
- Sir Thomas Lowther, 2nd Baronet
- Sir William Lowther, 3rd Baronet