Radomiro Tomic Romero was a Chilean lawyer and politician of Croatian origin, and candidate for the presidency of the Chilean Republic in the 1970 election. He graduated as a lawyer from the Pontifical Catholic University of Chile (PUC). He began his political activity in the Social-Christian circles of the PUC, and was one of the co-founders of the Falange Nacional in 1938. He became president of the party in 1946–1947 and 1952–1953. He was married to Olaya Errázuriz Echenique, and together they had 9 children.

Presidential elections were held in Chile on 4 September 1970. Salvador Allende of the Popular Unity alliance won a narrow plurality in a race against independent Jorge Alessandri and Christian Democrat Radomiro Tomic, before having his victory confirmed by a congressional vote after the Christian Democrats voted in favour of his candidacy.