The title Baron Abergavenny (or Bergavenny) was a barony by tenure in the Peerage of England. It was first created by King William I, and was extant for well over 800 years. It became abeyant upon the death of the fifth Marquess of Abergavenny in 2000.

Barons Abergavenny (unknown date of creation)

• Hamelin de Balun (William I)
• Brientius de Insula (William I)
• Walter de Gloucester (Henry I)
• Henry Fitzmiles (Henry I)
• Seisill ap Yago (Henry II)
• Seisill ap Dunwall (Henry II, d. 1175)
• William de Braose (d. 9 August 1211)
• Giles de Braose (d. 13 November 1216)
• Reginald de Braose (d. 1222?)
• William de Braose (d. 2 May 1230)
• William de Cantilupe (d. 1254)
• George de Cantilupe (d. 1273)
• John Hastings (1258-28 February 1313)
• John Hastings (1287-1325)
• Lawrence Hastings (d. 1348)
• John Hastings (d. 1375)
• John Hastings (d. 1391)

Barons Bergavenny (1392)

• William Beauchamp, 1st Baron Bergavenny (d. 1411)
• Richard Beauchamp, 1st Earl of Worcester, 2nd Baron Bergavenny (1397-1422)
• Elizabeth Beauchamp, 3rd Baroness Bergavenny (1415-1447)
• Edward Nevill, 3rd Baron Bergavenny (d. 1476) (Summoned to parliament in right of his wife, the third Baroness)
• George Nevill, 4th Baron Bergavenny (1440-1492)
• George Nevill, 5th Baron Bergavenny (d. 1535)
• Henry Nevill, 6th Baron Bergavenny (d. 1587)
• Edward Nevill, 7th Baron Bergavenny (d. 1589)
• Edward Nevill, 8th Baron Bergavenny (1551-1622)
• Henry Nevill, 9th Baron Bergavenny (d. 1641)
• John Nevill, 10th Baron Bergavenny (1614-1662)
• George Nevill, 11th Baron Bergavenny (d. 1666)
• George Nevill, 12th Baron Bergavenny (1665-1695)
• George Nevill, 13th Baron Bergavenny (d. 1721)
• George Nevill, 14th Baron Bergavenny (1702-1723)
• Edward Nevill, 15th Baron Bergavenny (d. 1724)
• William Nevill, 16th Baron Bergavenny (d. 1744)
• George Nevill, 17th Baron Bergavenny (1727-1785) (became Earl of Abergavenny in 1784)