Jens Otto Busch (16 August 1904 – 13 January 1983) was a Danish field hockey player who competed in the 1928 Summer Olympics, in the 1936 Summer Olympics and in the 1948 Summer Olympics. He was born in Copenhagen and died in , Sjælland. In 1928 he was a member of the Danish team which was eliminated in the first round of the Olympic tournament after two wins and two losses. He played all four matches as a forward. Eight years later he was eliminated with the Danish team in the first round of the 1936 Olympic tournament. He played both matches.