The Tierney Baronetcy, of Brighthelmstone in the County of Sussex and of Dover Street in the County of Middlesex, was a title that was created twice in the Baronetage of the United Kingdom, both times in favour of Matthew Tierney, Physician-in-Ordinary to George III

George III of the United Kingdom

George III was King of Great Britain and King of Ireland from 25 October 1760 until the union of these two countries on 1 January 1801, after which he was King of the United Kingdom of Great Britain and Ireland until his death...

 and George IV

George IV of the United Kingdom

George IV was the King of the United Kingdom of Great Britain and Ireland and also of Hanover from the death of his father, George III, on 29 January 1820 until his own death ten years later...

. The first creation came on 3 October 1818, with normal remainder to the heirs male of his body. The second creation came on 5 May 1834, with remainder in default of male issue of his own to his younger brother Edward Tierney, Dublin, then crown solicitor
for Ireland, and the heirs male of his body. The 1818 creation became extinct on Tierney's death in 1845 while he was succeeded in the 1834 creation according to the special remainder by his brother, the second Baronet. The 1834 became extinct on the death of the third Baronet in 1860.

Tierney Baronets, of Brighthelmstone and of Dover Street (1818; First creation)

• Sir Matthew John Tierney, 1st Baronet (1776-1845)

Tierney Baronets, of Brighthelmstone and of Dover Street (1834; Second creation)

• Sir Matthew John Tierney, 1st Baronet (1776-1845)
• Sir Edward Tierney, 2nd Baronet (1780-1856)
• Sir Matthew Edward Tierney, 3rd Baronet (1818-1860)