John Bourke, 1st Earl of Mayo (; ; circa 1705 – 1790), styled Lord Naas (; ) from 1775 to 1781 and Viscount Mayo from 1781 to 1785, was an Irish politician and peer who was MP for Naas (1727–60, 1768–72) and Old Leighlin (1760–68) and was created Earl of Mayo (1785).
