István Molnár can refer to:
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István Molnár (chess player) (1933-2015), Hungarian chess player
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István Molnár (painter) (1968-1993), Hungarian painter
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István Molnár (volleyball)
István Molnár (9 October 1937 – 29 January 1999) was a Hungarian volleyball player. He competed in the men's tournament at the 1964 Summer Olympics
The , officially the and commonly known as Tokyo 1964 (), were an international m ...
(1937-1999), Hungarian volleyball player
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István Molnár (water polo) (1913-1983), Hungarian water polo player
{{hndis, Molnar, Istvan