Manuel Olivencia Ruiz (25 July 1929 – 1 January 2018) was a Spanish lawyer with a career as a professor, economist, and diplomat. He worked at the University of Seville and organized Seville Expo '92. He was born in Ronda, Spain. He won the Creu de Sant Jordi Award in 1990. He was Undersecretary of Education and Science during the first Transition government, advisor to the Bank of Spain, and a member of the board of RTVE.