Otakar "Otto, Vend" Vindyš (9 April 1889 – 23 December 1949) was a Czechoslovak ice hockey defenseman who competed in the 1920 Summer Olympics and in the 1924 Winter Olympics.

In 1911, Vindyš won the European Championship with Bohemia.

He was a member of the Czechoslovak national team which won the bronze medal at the 1920 Summer Olympics.

Four years later he also participated in the first Winter Olympic ice hockey tournament.

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