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This is a list of people who have served as Custos Rotulorum of Caernarvonshire.

• Sir Richard Bulkeley c. 1544
• John "Wynn" ap Maredudd bef. 1550–1559
• Maurice Wynn bef. 1562 – aft. 1577
• Robert Dudley, 1st Earl of Leicester bef. 1579–1588
• William Maurice bef. 1594–1596
• Sir Thomas Mostyn 1596–1618
• Sir John Wynn, 1st Baronet 1618–1627
• Sir Richard Wynn, 2nd Baronet 1627–1646
• Interregnum
• Sir Richard Wynn, 4th Baronet 1660–1674
• Richard Bulkeley, 3rd Viscount Bulkeley 1679–1689
• Lord Edward Russell 1689–1714
• Peregrine Bertie, 2nd Duke of Ancaster and Kesteven 1714–1739
• Sir William Yonge, 4th Baronet 1739–1755
• Sir John Wynn, 2nd Baronet 1756–1773
• Thomas Wynn, 1st Baron Newborough 1773–1781

For later custodes rotulorum, see Lord Lieutenant of Caernarvonshire.

• Institute of Historical Research - Custodes Rotulorum 1544-1646
• Institute of Historical Research - Custodes Rotulorum 1660-1828