Brigadier-General Richard Beale Colvin, CB (4 Aug 1856 – 17 January 1936) was a British officer and Conservative Party politician.
He served as High Sheriff of Essex in 1890, and was a Major in the Loyal Suffolk Hussars, a Yeomanry regiment based in Bury St Edmunds..
Following the outbreak of the Second Boer War in late 1899, Colvin was on 7 February 1900 appointed Deputy-Assistant Adjutant-General in the Imperial Yeomanry, responsible for corps raised outside the head-quarters of the existing yeomanry regiments. With the expansion of the number of Imperial Yeomanry regiments, he was a month later, on 14 March 1900, re-assigned and appointed in command of the 20th Battalion, Imperial Yeomanry, which set out for South Africa later that month. For his services during the war, he was appointed a Companion of the Order of the Bath (CB) in November 1900.
Colvin was elected as Member of Parliament (MP) for Epping at an unopposed by-election in 1917, after Epping's Conservative MP Amelius Lockwood was ennobled as Baron Lambourne. He was re-elected in 1918 and 1922, and retired from the House of Commons at the 1923 general election