In-Joo Cho (; born April 13, 1969 in Damyang, South Jeolla Province, South Korea) is a former boxer from South Korea. He held the WBC and Lineal Super flyweight titles.
In 1987, Oh won the gold medal in flyweight at the World Junior Amateur Boxing Championships held in.
Cho turned professional in 1992 and compiled a record of 12âÂÂ0 before facing and defeating Gerry Peñalosa to win the WBC super flyweight title. He would go on to defend the title five times before losing the title to Masamori Tokuyama via unanimous decision.