Yilma Deressa (1907–1979) was an Ethiopian politician. He served as Finance Minister (1957–1970) and Minister of Foreign Affairs (1958), Ambassador to the United States, and member of the Ethiopian Senate. John Spencer includes him in his list of five public figures who occupied the most important posts for the two decades following the Second World War.
He was a member of the Welega aristocracy of southwestern Ethiopia. Yilma's father, Blatta Deressa Amante, whom Bahru Zewde describes was "perhaps the most prolific contributor to the weekly forum of the educated elite, Berhanena Selam", a newspaper, in the 1920s, was a cousin of Dejazmach Kumsa Moroda, the last king of Leqa Naqamte, Moti Moroda Bekere. Blatta Deressa was also a successful businessman, and served as a director in the Ministry of Agriculture in the 1930s, and after returning from exile in Sudan in 1941, Blatta Deressa acquired a reputation as an Oromo oral historian.
Yilma was educated at the London School of Economics, becoming a member of the Ethiopian pre-war intelligentsia; according to Spencer he was both fluent and eloquent in English, speaking it at home with his wife Elizabeth, and along with Dejazmach Zewde Gebre Selassie was the only member of his generation "who attempted to keep up with current literature" in his field. Following the defeat of the Ethiopian armies in the Second Italo-Abyssinian War, he became a member of the Black Lions, but surrendered with Ras Imru Haile Selassie near the Gojeb River 19 December 1936. Because he was interned on Ponza with Ras Imru, he avoided the murderous retribution following the attempted assassination of Rodolfo Graziani 19 February 1937.
After the restoration of Emperor Haile Selassie, Yilma was appointed vice minister of Finance with, according to Margery Perham, "no minister being appointed over him." Perham notes that his new role involved significant challenges: "It may well be imagined that it was hard work to build a new system of public finance upon the old medieval foundations, which were still cluttered up with the wreckage of the Italian structure." Nevertheless Perham notes, "A staff was collected; something like a school of accountancy was set up and the British advisers compiled and expounded a set of financial regulations. Moreover, as the British advisers could not speak Amharic and most of the Ethiopians could not talk English, the proceedings were made more difficult by the need of interpreters, especially as few of the required standard were available."
Yilma played an important role in Ethiopia-United States relations by recruiting George A. Blowers to help Ethiopia obtain a loan of 1.5 million ounces of silver from the United States in 1943. This metal was used to mint a new coin to replace the Maria Theresa Thaler and East African Shilling, which would decrease its dependence on the British and give Ethiopia some relief from the effects of the oppressive Anglo-Ethiopian Agreement.
He was married first to W/o Kidist Tessema with whom he had a daughter, Tsedale Yilma and second to W/o Elsabet Workeneh, with whom he had three daughters, Sophia Yilma, Hannah Yilma and Salome Yilma and two sons, Benyam Yilma and Fanuel Yilma. Sophia Yilma, became a politician. 
- Spencer, John H. (1984). Ethiopia at Bay: A personal account of the Haile Selassie years. Algonac: Reference Publications. p. 121. ISBN 0-917256-25-5.
- Zewde, Bahru (2002). Pioneers of Change in Ethiopia. Oxford: James Currey. p. 75. ISBN 0-8214-1445-3.
- Spencer, Ethiopia at Bay, p. 120
- Bahru Zewde, Pioneers, p. 88
- Perham, Margery (1969). The Government of Ethiopia (Second ed.). London: Faber and Faber. pp. 199f. ISBN 0-571-04661-4.
- Spencer, Ethiopia at Bay, pp. 105ff
- Deaths elsewhere: Yilma Derassa, Toledo Blade, 2 February 1979
- Wagle, Mary-Jane. "Sophie Yilma Deressa". Ethiopian Women Unleashed. HBF Ethiopia. Retrieved 18 November 2013.