Helsingin Jalkapalloklubi, commonly known as HJK Helsinki, or simply as HJK, is a Finnish football club based in Helsinki. The club competes in Veikkausliiga, the top division of the Finnish football league system. Founded in 1907, the club has spent most of its history in the top tier of Finnish football. The club's home ground is the 10,770-seat Bolt Arena, where they have played their home games since 2000.

Veikkausliiga is the premier division of Finnish football, the highest tier of the Finnish football league structure, comprising the top 12 clubs of the country. Its main sponsor is the Finnish national betting agency Veikkaus, hence the league's name. Veikkausliiga was founded in 1990; before that the top division was called Mestaruussarja since 1930 which was an amateur or semi-professional league. Between 1908 and 1930 the championship was decided as a knock-out cup competition.