The history of Odra Opole began on 16 June 1945, when in the town hall of former German city of Oppeln, a group of sports officials gathered to form a Polish sports organisation. Under first chairman, lawyer Leonard Olejnik, Odra organised first sports competition in the now-Polish city: street running (July 1945). In 1948, Odra merged with Lwowianka Opole and Chrobry Groszowice, and in 1948 – 1958, the club was called Budowlani Opole. By 1950, Budowlani had several departments, including football, track and field, tennis, boxing, ice hockey and volleyball.