This is a list of people who have served as Custos Rotulorum of Westmorland.
Ambrose Middleton bef. 1544 – aft. 1547
Alan Bellingham bef. 1558–1578
Sir Thomas Boynton bef. 1579–1582
Robert Bragge 1582–1584
Sir Thomas Strickland 1584–1612
Henry Clifford, 1st Baron Clifford 1621–1641
Sir Philip Musgrave, 2nd Baronet 1641–1646
Interregnum
Sir Philip Musgrave, 2nd Baronet 1660–1678
John Lowther, 1st Viscount Lonsdale 1678–1700
Thomas Wharton, 5th Baron Wharton 1700–1702
Thomas Tufton, 6th Earl of Thanet 1702–1706
Thomas Wharton, 1st Earl of Wharton 1706–1714
Thomas Tufton, 6th Earl of Thanet 1714
Thomas Wharton, 1st Marquess of Wharton 1714–1715
Henry Lowther, 3rd Viscount Lonsdale 1715–1751
For later custodes rotulorum, see Lord Lieutenant of Westmorland.