The High Sheriff of Sligo was the British Crown’s judicial representative in County Sligo, Ireland from the 16th century until 1922, when the office was abolished in the new Free State and replaced by the office of Sligo County Sheriff. The sheriff had judicial, electoral, ceremonial and administrative functions and executed High Court Writs. In 1908, an Order in Council made the Lord-Lieutenant the Sovereign's prime representative in a county and reduced the High Sheriff's precedence. However the sheriff retained his responsibilities for the preservation of law and order in the county. The usual procedure for appointing the sheriff from 1660 onwards was that three persons were nominated at the beginning of each year from the county and the Lord Lieutenant then appointed his choice as High Sheriff for the remainder of the year. Often the other nominees were appointed as under-sheriffs. Sometimes a sheriff did not fulfil his entire term through death or other event and another sheriff was then appointed for the remainder of the year. The dates given hereunder are the dates of appointment. All addresses are in County Sligo unless stated otherwise.

High Sheriffs of County Sligo

• 1602: Sir Roger Jones (first High Sheriff)
• 1606: William Crofton
• 1608: Teige O'Hara Boy
• 1613: William Crofton
• 1627–1628: Jasper Brett of Rathdooney
• 1635: Jasper Brett of Rathdooney
• 1665: Kean O'Hara
• Adam O'Hara
• Kean O'Hara (son of Kean O'Hara HS 1665)
• 1674: Thomas Soden of Grange
• 1687: Henry Crofton
• 1699: Percy Gethin
• 1701–1704: William Smith of Knockshammer
• 1703: Kean O'Hara
• 1706: James Soden of Grange
• 1708: Henry Griffith of Ballytivenan
• 1718: Joshua Cooper
• 1723: Owen Wynne of Hazlewood
• 1724: Sir Richard Gethin, 3rd Baronet
• 1730: Edward Soden of Grange
• 1731: Colonel John Irwin
• 1736: James Soden of Grange
• 1745: Owen Wynne of Hazlewood
• 1748: Cairncross Nesbitt
• 1754: Philip Byrne
• 1770: Malby Crofton
• 1771: Sir Booth Gore, 1st Baronet
• 1776: Henry Griffith of Ballytivenan
• 1780: Sir Percy Gethin, 5th Baronet
• 1785: Charles O'Hara of Nymphsfield
• 1785: Sir Booth Gore, 2nd Baronet
• 1802: William Griffith of Ballytivenan
• 1803: William Griffith of Ballytivenan
• 1806: Sir Robert Newcomen Gore-Booth, 3rd Baronet
• 1821: John Phibbs
• 1824: John Frederick Knox, of Ballina
• 1825: Robert W. Hillas, Cregg-house
• 1827: John Gethin of Auburn
• 1828: Charles Keane O’Hara, of Annaghmore, Collooney.
• 1842: Richard Gethin of Craig
• 1845: Philip Perceval, Temple House.
• 1846: Edward Joshua Cooper, of Markree, Colooney
• 1847: Henry Griffith of Port Royal and Castle Neynoe
• 1848: James Kirkwood
• 1849: Charles William Cooper, of Cooper Hill, Riverstown.
• 1850: Bernard Owen Cogan, of Lisconny-House, Collooney.
• 1861: Edward King Tenison of Kilronan Castle, Keadue
• 1862: Abraham Martin, Bloomfield
• 1871: Edward Henry Cooper of Markree Castle
• 1872: Sir Henry William Gore-Booth, 5th Baronet
  Sir Henry Gore-Booth, 5th Baronet
  Sir Henry William Gore-Booth, 5th Baronet , was a notable Arctic explorer, adventurer and landowner from Lissadell House, Sligo, Ireland.-Antecedents:...
  
  
• 1876: William James Griffith
• 1877: Captain Gregory Wood
• 1887: Hillas
• 1892: Alexander Joseph Crichton
• 1893: George Gethin
• 1903: Arthur Cooper O'Hara
• 1904: Sir Josslyn Augustus Richard Gore-Booth, 6th Baronet
• 1908: Bryan Ricco Cooper
• 1914: Christopher Guy Orm