David Vaughan (c.1810–c.1892) was a Welsh architect, surveyor, land agent and diarist.
Vaughan began his career working as a carpenter at Stradey Castle in Llanelli. He began practising as an architect around 1840, and became land agent for three major estates in south Wales: Ffynnonwen, Newton and Pendoylan.
Vaughan is best known as the architect of Bridgend Town Hall, erected in 1843 and demolished in 1971. The building was in a Greek Doric style and made the town of Bridgend the owner of one of the most impressive civic buildings in Wales. His earlier projects was Bonvilston House Lodge, which still stands, and Fairwater House in Cardiff. He also rebuilt the Church of St Illtyd in Llanharry in the years 1867-8.
In the mid-1880s, Vaughan and most of his large family moved to Llwynglas, near Peterston-super-Ely in the Vale of Glamorgan. He was married twice and had 22 children in all. A collection of his papers is held by the Glamorgan Record Office.
His date of death is recorded by some sources as 1892, but his assets were not audited until September 1905, thus his actual date of death is uncertain.