OFC Kostenets () is a Bulgarian association football club based in Kostenets, which competes in the A RFG Sofia, the forth division of the Bulgarian football league system. Fratrias home ground is the Benkovski Stadium, which has a capacity of 2,500 spectators.
OFC Kostenets was established in 2020 and joined A RFG Sofia. In 2023 the team signed a sponsorship contract with 8888.bg and expressed a desire to get experienced players. They signed with Svetoslav Petrov, Yordan Varbanov, Milen Kikarin and Petar Dimitrov. In November 2023 they surprisingly signed with the ex-national star player Valeri Bojinov. They also announced the joining of another ex-national player Radoslav Vasilev. The team finished the first half of the season with 10 wins from 10 matches. In February 2024 they also got the captain of Pirin Razlog.
'
Had international caps for their respective countries, held any club record, or had more than 100 league appearances. Players whose name is listed in bold represented their countries.