Major Sir Richard Whieldon Barnett (6 December 1863 – 17 October 1930) was an Irish barrister, sportsman, volunteer officer and freemason who sat as a Member of Parliament in the United Kingdom House of Commons.

[2][3] An expert sport shooter, Barnett represented Ireland in the contest for the Elcho Shield on 37 occasions and twice made the record score.

[2][3] He was one of twelve competitors for the United Kingdom of Great Britain and Ireland in the 1908 Summer Olympics.

He was involved in hosting World Chess Champion José Raúl Capablanca on a visit to the UK in 1919.

[2][3] He died on 17 October 1930, aged 66, following complications after an operation[3] and is buried in a family vault on the eastern side of Highgate Cemetery.

Barnett had been churchwarden of Christchurch, Albany Street from 1918, and in June 1931, a tablet to his memory was also erected there.