Lieutenant-General Sir Ralph Bouverie Deedes, KCB, OBE, MC (17 October 1890 − 3 March 1954) was a British officer who served in the Indian Army.

[1] Deedes was commissioned onto the unattached list of the Indian Army on 29 January 1910 and posted to the 31st Punjabis on 5 March 1911.

From 27 April to 7 October 1918 he was a Deputy Assistant Military Secretary to the Commander in Chief, India and from 27 January 1919 to 1 January 1922 he was an Assistant Military Secretary to the Commander in Chief, India and for his service during the operations against Afghanistan in 1919 he was made an Officer of the Order of the British Empire.

He was appointed a Company Commander in the 2nd battalion 16th Punjab Regiment (the post 1922 title of the 31st Punjabis) on 24 November 1924.

[5] He was appointed Colonel of the 18th Garhwal Rifles 1 December 1944, and was advanced to KCB in the London Gazette 14 June 1945.