César Jaroslavsky (May 3, 1928 - February 7, 2002) was an Argentine politician prominent in the UCR, the country's oldest existing political party.
Jaroslavsky was born in Victoria, Entre Ríos Province, in 1928. His father, a wheat farm laborer, died in 1941, and the family moved to Buenos Aires, where César found work in a brick factory. He joined the centrist Radical Civic Union (UCR) in 1945, though the October 13 arrest of the UCR's chief rival, populist leader Juan Perón, prompted the young Jaroslavsky to join the historic October 17 protests for his release (Perón would go on to win the pivotal 1946 general elections).
Returning to Victoria, Jaroslavsky was a provincial swimming champion at age 20 and later that year, was elected President of the Entre Ríos chapter of the UCR Youth. A bank teller initially, he joined the editorial staff at the local newsdaily, La Mañana, in 1952. Assigned as secretary to UCR lawmaker Eduardo Laurencena, Jaroslavsky earned some prominence when Laurencena was appointed President of the Central Bank of Argentina, in 1956. He was elected to the Provincial Legislature of Entre Ríos in 1958, and re-elected in 1963.
Jaroslavsky displayed a contentious style in politics, early on: the granting of what he considered execessive salaries and stipends to Entre Ríos legislators lad to his resignation form the body in 1965 (a 1966 coup d'état suspended that and all other legislative bodies in Argentina, as it happened).
The military regime's imminent call for elections led Jaroslavsky in 1972 to join the "Movement for Renewal and Change," Raúl Alfonsín's center-left alternative within the UCR to Ricardo Balbín's more conservative, mainstream ticket. Alfonsín's loss to Balbín in the primaries (and Balbín's loss to the Peronists in the 1973 general elections) caused Jaroslavsky's departure from active politics; Argentina, for its part, would be ruled by another dictatorship from 1976 to 1983.