Ivan Vladimir Rohaček (19 April 1909 in Kysáč Kingdom of Serbia – 22 November 1977) was a Slovak chess player.
Rohaček took 12th at Bad Sliač 1932 (Salo Flohr and Milan Vidmar won).
In December 1941, he played for Slovakia in a match against Croatia on first board with Lajos Asztalos (1 : 1) in Zagreb.
[1] In 1942, he tied for 9-10th in Munich (Europameisterschaft, 1st European Individual Chess Championship).
In 1948, he tied for 11-13th in Karlovy Vary (Karlsbad) – Marianske Lazne (Marienbad).