Colonel Sir Thales Pease KCB (12 August 1835 – 26 February 1919) was a British Army and Navy ordnance officer.

[5] In 1884–1885 he served in the Sudan campaign as senior ordnance store officer, Nile Expedition,[2] was mentioned in dispatches, and in recognition of his services was promoted Deputy Commissary-General of Ordnance with the honorary rank of colonel 15 June 1885.

[2] In 1890 Pease was appointed technical adviser to a committee to which was entrusted the duty of forming a separate ordnance department for the Navy,[2] and in October 1891 he was transferred to the new Naval Ordnance Department at the Admiralty.

[8] Owing to his foresight in having reserves at a critical time, the Admiralty was able to give material assistance to the Army in the early part of the Second Boer War (1899–1902).

In recognition, Pease was in the Birthday Honours list published 9 November 1901 appointed a Knight Commander of the Order of the Bath (KCB),[9] and invested as such by King Edward VII at St James's Palace on 17 December 1901.