Regional Rugby Championship

{{Short description|Annual rugby union competition}}

{{Infobox rugby league cup

|title = Regional Rugby Championship

|current_season = 2022 Regional Rugby Championship

|logo =

|sport = Rugby union

|founded = 2007

|teams = 6

|countrytag=Nations

|country = {{flagicon|Serbia|rugby union}} {{flagicon|Croatia|rugby union}} {{flagicon|BIH|rugby union}} {{flagicon|Slovenia|rugby union}} {{flagicon|MNE|rugby union}} {{flagicon|Hungary|rugby union}}

|champion = {{flagicon|BIH}} RK Čelik

|season =

|most_champs = {{flagicon|Croatia}} RK Nada Split (9 titles)

|website = [http://rrcrugby.com/ Official site]

}}

The Regional Rugby Championship is an annual rugby union competition involving sides from Bosnia-Herzegovina, Croatia, Hungary, Montenegro, Serbia and Slovenia. This was a successor to the Interliga between clubs from Bosnia-Herzegovina, Croatia and Slovenia which started in 2004/2005. In the past the Championship has also featured teams from Austria and Bulgaria, and invitations to teams from Greece. Currently six teams qualify each season, based on their performance in national championships. The first season in 2007/2008 had 11 teams. The 2019/2020 season was suspended due to the COVID-19 pandemic.