Their stadium was the "Gradski Stadion", today their bigger city rival FK Rudar Prijedor plays there.

In 1969 OFK Prijedor played the play-offs for access to the Yugoslav Second League and their opponent was NK Jedinstvo from Zagreb.

They managed this by winning in the play-offs NK Hajduk Orašje by 3–0 in a match played in Prijedor stadium in front of a crowd of 6,000.

[2] During the 1980s the club was coached by Ivica Milošević, Ale Hrnić, Radoslav Zubanović and Idriz Hošić,[3] and among the players worth mention were Almir Kaltak, Mirsad Karagić, Almir Karagić, Nihad Čaušević, Abdulah Dule Muhić, Mesud Crljenković, Rizvanović, Satko Džamastagić, Suad Bešić, Merim Šećerbegović and Sanimir Ramić.

[4] In this period the derby's with city rivals FK Rudar Prijedor were extremely intense.