Sergiy Timofeyevich Shevchenko (Ukrainian: Сергій Тимофійович Шевченко) (October 5, 1908, in Makiyivka, Donetsk region – 200?, in Kyiv) was a Ukrainian politician and diplomat who served as the Permanent Representative of Ukraine to the United Nations.

Sergiy Shevchenko graduated from the Kharkiv Institute of National Economy, and the Institute of Red Professors in 1937.

• In 1937 he was heading department of executive cadres in People's Commissariat of Education of the Ukrainian SSR.
• In 1941 - he entered military service in Red Army.
• In 194?–1946 - Deputy Chief Political Officer in the 3rd Guards Tank Army.
• In 1946 - he worked in the Kyiv Regional Committee of the Communist Party of Ukraine.
• In 1964 to 1968 - he was permanent representative of the Ukrainian Soviet Socialist Republic to the United Nations.^[1]
• In 1968, after an unsuccessful press conference to mark the 50th anniversary of the Ukrainian SSR, Sergei Shevchenko left New York City.^[2]