Field Marshal Sir Richard James Dacres, GCB (1799 – 6 December 1886) was a British Army officer during the nineteenth century.

Born into a substantial naval dynasty, he would achieve similar status in the military, commanding three troops of Royal Horse Artillery at the Battles of Alma in September 1854, Balaclava in October 1854 and Inkerman in November 1854, and throughout the Siege of Sevastopol during the Crimean War and eventually rising to the rank of field marshal.

[5] Dacres commanded his forces at the Battles of Alma in September 1854, Balaclava in October 1854 and Inkerman in November 1854, and throughout the Siege of Sevastopol.

[5] When Brigadier-General Fox-Strangways was killed in the battle, Dacres took over command of all the artillery in the Crimea, retaining the post until the end of the war.

[5] He was advanced to the local rank of colonel on 23 February 1855,[5] brigadier general on 30 March 1855,[8] and was promoted to major-general on 29 June that year.