Colonel Ronald Ernest Stephen Yeldham CBE (18 August 1902 – 14 August 1983) was an Indian-born British Army officer and cricketer.

He served in Africa and the Indian Ocean from 1928 to 1945.^[1][2] In June 1945, Yeldham was appointed Commander of the Order of the British Empire (CBE) as temporary Colonel commanding the British troops in Mauritius.^[3]

In 1949 Yeldham was a Principal in the Colonial Office, West African Department, and wrote a memorandum (16 March) on Soviet activity in Nigeria. There was MI5 surveillance of Harry Pollitt's contact with Mokwugo Okoye, a Zikist leader (Yeldham, memorandum in December of that year).^[4] During the Malayan Emergency, in 1952, he was instrumental in the use of sodium trichloroacetate as a defoliant.^[5]

Yeldham then held civil appointments in Kenya, from 1954.^[6][7]

Yeldham played six first-class cricket matches in British India between 1925 and 1927, including one for the MCC.^[8] He later played twice for Egypt against HM Martineau's XI.^[9]