Iván Balás (Serbian: Iván Balaž, Иван Балаж [ǐʋan balâːʒ]; Hungarian: Balázs Iván [ˈbɒlaːʒ ˈivaːn]; 1894 – 1971) was a Yugoslav tennis player of Hungarian ethnicity. He was the one of the first to play for the Yugoslavian team at the International Lawn Tennis Challenge, and later the Davis Cup in 1927. Technically his match was the second rubber of the tie. Apart from team competitions, he clinched international championships for Yugoslavia, Hungary, Austria, Romania and Slovakia in various events.