David Morgan of Penygraig (c.1695 – 30 July 1746) was a Welsh lawyer and Jacobite, or supporter of the claim of the exiled House of Stuart to the British throne. Morgan was notable as one of only a handful of Welshmen to join the Jacobite rising of 1745, during which he briefly served in Lord Elcho's 'Life Guards' and helped raise the Manchester Regiment. Unwilling to retreat to Scotland with the rest of the Jacobite Army, he was arrested by the government near Stone, Staffordshire, tried and executed in July 1746.