The final was played at the Estadio Metropolitano in Madrid, Spain, between Tottenham Hotspur and Liverpool. It was the second all-English final after the 2008 final, which was contested between Manchester United and Chelsea in Moscow.
Liverpool defeated Tottenham 2-0 and have earned the right to play against Chelsea, the winners of the 2018-19 UEFA Europa League, in the 2019 UEFA Super Cup; they also qualified for the 2019 FIFA Club World Cup in Qatar. They automatically qualified for the 2019-20 UEFA Champions League group stage. As Liverpool had already qualified for the group stage by clinching the second place at domestic league, the berth reserved for the English runner-up was given to the champions of the 2018-19 Austrian Bundesliga - the 11th-ranked association according to next season's access list.
For the first time, the video assistant referee (VAR) system was used in the competition from the round of 16 onward.
Real Madrid were the defending champions, having won each of the last three titles. They were eliminated by Ajax in the round of 16.
On 9 December 2016, UEFA confirmed the reforming plan for the UEFA Champions League for the 2018-2021 cycle, which was announced on 26 August 2016. As per the new regulations, the previous season's UEFA Europa League winners will qualify automatically for the UEFA Champions League group stage (previously they would qualify for the play-off round, but would be promoted to the group stage only if the Champions League title holder berth was vacated, although this promotion to the group stage had been made in all three seasons since it was established from 2015-16). Meanwhile, the top four teams from the leagues of the four top-ranked national associations in the UEFA country coefficients list will qualify automatically for the group stage as well. Only six teams will qualify for the group stage via the qualification rounds, down from ten in the previous season.