Henry Vaughan Lanchester (9 August 1863 – 16 January 1953) was an English architect working in London.

He served as editor of The Builder, was a co-founder of the Town Planning Institute and a recipient of the Royal Gold Medal.

He was articled to his father, but also worked in the offices of London architects F.J. Eadle, T.W.

He studied at the Royal Academy in 1886, won the Aldwinckle Prize and, in 1889, the Owen Jones Studentship.

As Lanchester, Stewart and Rickards, in 1897 the firm won the competition to build Cardiff City Hall.