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

• Sir John Salusbury before 1544 – c. 1548
• Edward Herbert before 1558–1593
• Richard Herbert 1594–1596
• Richard Broughton 1596–1602
• William Herbert, 1st Baron Powis 1602–1641
• Philip Herbert, 4th Earl of Pembroke 1641–1643
• Herbert Vaughan 1643–1646
• Interregnum
• Edward Vaughan Mar–July 1660
• Edward Herbert, 3rd Baron Herbert of Chirbury 1660–1678
• Hon. Andrew Newport Jan – Dec 1679
• Henry Herbert, 4th Baron Herbert of Chirbury 1679–1685
• Hon. Andrew Newport 1685–1687
• William Herbert, 1st Marquess of Powis 1687–1689
• Henry Herbert, 4th Baron Herbert of Chirbury 1689–1691
• Hon. Andrew Newport 1691–1699
• Charles Gerard, 2nd Earl of Macclesfield 1700–1701
• Richard Newport, 2nd Earl of Bradford 1701–1711
• Price Devereux, 9th Viscount Hereford 1711–1714
• Richard Newport, 2nd Earl of Bradford 1714–1723
• Henry Newport, 3rd Earl of Bradford 1724–1734
• Henry Herbert, 1st Earl of Powis 1735–1772

For later custodes rotulorum, see Lord Lieutenant of Montgomeryshire.