Rosenborg Ballklub, commonly referred to simply as Rosenborg or RBK, is a Norwegian professional football club from Trondheim that plays in the Eliteserien.The club have won a record 25 league titles, eleven Norwegian Football Cup titles and have played more UEFA matches than any other Norwegian team. RBK play their home games at the all-seater Lerkendal Stadion which has a capacity of 21,400. Kåre Ingebrigtsen was appointed head coach in July 2014. In July 2018, Ingebrigtsen was sacked by the board of the club, and replaced by Rini Coolen, former head of the clubs youth academy, as head coach.
The club was founded as Odd in 1917 but were not allowed to play amateur league matches until 1928, when they took the present name. They reached the League of Norway in 1937–38, but were relegated to lower divisions during the 1940s. The club moved to Lerkendal in 1957 and their first title was the 1960 Cup, resulting in their first participation in a UEFA tournament. It was not until the 1960s that RBK was established as Trondheim's leading football team. In 1967 RBK was promoted to the top league where they, except for the 1978 season, have remained ever since.