Si Tjonat (Perfected Spelling: Si Conat) is a likely lost 1929 bandit film from the Dutch East Indies (now Indonesia) directed by Nelson Wong and produced by Wong and Jo Eng Sek. Based on the novel by F.D.J. Pangemanann, the silent film followed an indigenous man who, having killed his fellow villager, flees to Batavia (today Jakarta) and becomes a bandit. After kidnapping an ethnic Chinese woman, he is defeated and brought to justice.