Dudley Jack Barnato Joel (26 April 1904 – 28 May 1941) was a British businessman and Conservative Party politician.

Part of the wealthy and prominent Joel family, he was the son of businessman Solomon Barnato Joel and his wife Ellen (Nellie) Ridle; he was married to Esme Oldham.

Heavily involved in Thoroughbred horse racing, in 1922, his father purchased Moulton Paddocks in Newmarket from the estate of Sir Ernest Cassel.

With the outbreak of the Second World War, he joined the Royal Naval Volunteer Reserve and was killed in action on 28 May 1941 when the steam merchant HMS Registan was bombed by German aircraft off Cape Cornwall.

[1] Joel is buried in the family plot at the Willesden Jewish Cemetery in London.