The Hayes baronetcy, of Westminster, London, was created in the Baronetage of Great Britain on 6 February 1797 for John Hayes, a military physician and Physician-Extraordinary to the Prince of Wales. The title became extinct on the death of the 3rd Baronet in 1896.
Hayes baronets, of Westminster (1797) Sir John Macnamara Hayes, 1st Baronet (1750–1809) Sir Thomas Pelham Hayes, 2nd Baronet (1794–1851) Sir John Warren Hayes, 3rd Baronet (1799–1896), left no male heir. His son, Capt. John Beauchamp Hayes (1849–1884), predeceased him, having had three daughters.
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