Otakar Kouba (24 October 1906 – January 1983) was a Czechoslovak canoeist who competed in the 1936 Summer Olympics. He was born in Prague in October 1906. In 1936 he and his partner Ludvík Klíma finished fifth in the folding K-2 10000 m event. Kouba died in January 1983, at the age of 76.