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. Rijeka were the defending champions, who have won their first Croatian league title and ended Dinamo Zagreb's consecutive 11-season reign the previous season. Dinamo Zagreb ultimately reclaimed the title by May 2018, their 19th since the league's inception, with Rijeka ending close second.
HNL 2017/18
Sezona 2017/18 Prve hrvatske nogometne lige igrala se s 10 klubova. Prvak je bio Dinamo Zagreb. Najbolji strijelac sezone bio je Mirko Marić s 19 golova za Osijek. Hrvatski nogometni kup osvojio je Dinamo Zagreb.