Aleksa Dundić or Oleko Dundich (Russian: Олеко Дундич, Serbo-Croatian: Aleksa Dundić, originally Томо Дундић / Tomo Dundić; April 13, 1896 – July 8, 1920) was a Serbian participant in Russia's October Revolution. A popular character in Russian literature (celebrated for his riding skills and courage), Dundić was honoured with the Order of the Red Banner.