Field Marshal Sir Hew Dalrymple Ross, GCB (5 July 1779 – 10 December 1868) was a British Army officer.

Ross was the last person to hold the title of Lieutenant-General of the Ordnance, assuming responsibility for the artillery component sent to take part in the Crimean War under Lord Raglan.

[11] During the Hundred Days, Ross was engaged at the Battle of Waterloo in June 1815, and although half his guns were disabled, the remainder took part in the pursuit of the French.

[15] He became Lieutenant-General of the Ordnance on 2 May 1854[16] and in that capacity was responsible for checking the artillery component sent to take part in the Crimean War under Lord Raglan personally ensuring that every battery was despatched from the United Kingdom to the front in a high state of efficiency.

[18] He was advanced to Knight Grand Cross of the Order of the Bath on 5 July 1855[19] and also served as colonel commandant of the Royal Horse Artillery.

[12] Ross retired in April 1858; he became Master Gunner, St James's Park in 1864 and, having been promoted to field marshal on 1 January 1868,[20] he became lieutenant-governor of the Royal Hospital Chelsea on 3 August 1868.