The Croatian Academy Football League is the top level of youth football in Croatia. It is contested by academy teams of First League clubs and is organised by the Croatian Football Federation.
Since its inception in 1991, and with the exception of 2014–15 when U19 league was not played, the youth league has been contested in two age categories and from 2014-15 three age categories:
The club won the senior Prva HNL and all youth level league titles in the same season.
The 1992 Croatian First Football League was the first season of the top Croatian football league. It was the inaugural season of the league established following Croatia's independence from Yugoslavia. Affected by the political and social upheavals stemming from the breakup of Yugoslavia and the early stages of the 1991–95 war, the season was drastically shortened and played over the course of less than four months, from 29 February to 13 June.
The 2008–09 season was the 98th season in Hajduk Split’s history and their eighteenth in the Prva HNL. Their 5th place finish in the 2007–08 season meant it was their 18th successive season playing in the Prva HNL.
The 2009–10 season was the 99th season in Hajduk Split’s history and their nineteenth in the Prva HNL. Their 2nd place finish in the 2008–09 season meant it was their 19th successive season playing in the Prva HNL.
The 2010–11 Croatian First Football League was the 20th season of the Croatian First Football League, the national championship for men's association football teams in Croatia, since its establishment in 1992. It began on 23 July 2010 and ended on 21 May 2011. Dinamo Zagreb were the defending champions, having won their 12th championship title the previous season, and they defended the title again.
The 2010–11 Croatian Football Cup was the twentieth season of Croatia's football knockout competition.
The 2011–12 season was the 101st season in Hajduk Split’s history and their twenty-first in the Croatian First Football League. Their 2nd place finish in the 2010–11 season means it was their 21st successive season playing in the Prva HNL.
The 2004–05 season was the 94th season in Hajduk Split’s history and their fourteenth in the Prva HNL. Their 1st place finish in the 2003–04 season meant it was their 14th successive season playing in the Prva HNL.
The 2003–04 season was the 93rd season in Hajduk Split’s history and their 13th in the Prva HNL. Their second place finish in the 2002–03 season meant it was their 13th successive season playing in the Prva HNL.
The 2005–06 season was the 95th season in Hajduk Split’s history and their fifteenth in the Prva HNL. Their 1st place finish in the 2004–05 season meant it was their 15th successive season playing in the Prva HNL.
The 2006–07 season was the 96th season in Hajduk Split’s history and their sixteenth in the Prva HNL. Their 5th place finish in the 2005–06 season meant it was their 16th successive season playing in the Prva HNL.
The 2007–08 season was the 97th season in Hajduk Split’s history and their seventeenth in the Prva HNL. Their 2nd place finish in the 2006–07 season meant it was their 17th successive season playing in the Prva HNL.
The 2014–15 season was the 104th season in Hajduk Split’s history and their twenty-fourth in the Prva HNL. Their 3rd place finish in the 2013–14 season means it was their 24th successive season playing in the Prva HNL.
The 2015–16 season was the 105th season in Hajduk Split’s history and their twenty-fifth in the Prva HNL. Their 3rd place finish in the 2014–15 season means it was their 25th successive season playing in the Prva HNL.
The 2016–17 season is the 106th season in Hajduk Split’s history and their twenty-sixth in the Prva HNL. Their 3rd place finish in the 2015–16 season means it is their 26th successive season playing in the Prva HNL.
The 2017–18 Croatian First Football League was the 27th season of the Croatian First Football League, the national championship for men's association football teams in Croatia, since its establishment in 1992. The season started on 14 July 2017 and ended on 19 May 2018.
The 2017–18 season was the 107th season in Hajduk Split's history and their twenty-seventh in the Prva HNL. Their 3rd-place finish in the 2016–17 season means it was their 27th successive season playing in the Prva HNL.
The 2018–19 Croatian First Football League was the 28th season of the Croatian First Football League, the national championship for men's association football teams in Croatia, since its establishment in 1992. The season started on 27 July 2018 and finished on 26 May 2019.
The 2020–21 season was the 110th season in Hajduk Split’s history and their thirtieth in the Prva HNL.
The 2020–21 NK Osijek season is the club's 107th season in existence and the 12th consecutive season in the top flight of Croatian football. In addition to the domestic league, Osijek participated in this season's editions of the Croatian Cup and the UEFA Europa League. The season covers the period from 1 July 2020 to 30 June 2021.
The 2020–21 NK Varaždin (2012) season is the club's ninth season in existence and the second consecutive season in the top flight of Croatian football. In addition to the domestic league, Varaždin will participate in this season's edition of the Croatian Cup. The season covers the period from 1 July 2020 to 30 June 2021.