Lewis Vulliamy was an English architect descended from the Vulliamy family of clockmakers.

Lewis Vulliamy was the son of the clockmaker Benjamin Vulliamy. He was born in Pall Mall, London on 15 March 1791, and articled to Sir Robert Smirke. He was admitted to the Royal Academy Schools in 1809, where he won the silver medal the year after for an architectural drawing, and the gold medal in 1813. He was elected Royal Academy travelling student in 1818, after which he studied abroad for four years, mostly in Italy, but also visiting Greece and Asia Minor.

He was a great-uncle of the art potter Blanche Georgiana Vulliamy.

Vulliamy died at Clapham Common, on 4 January 1871.