The 2019 AFC Champions League qualifying play-offs were played from 5 to 19 February 2019. A total of 27 teams competed in the qualifying play-offs to decide eight of the 32 places in the group stage of the 2019 AFC Champions League.
The following 27 teams, split into two regions (West Region and East Region), entered the qualifying play-offs, consisting of three rounds:
<section begin=Format /> In the qualifying play-offs, each tie was played as a single match. Extra time and penalty shoot-out were used to decide the winner if necessary (Regulations Article 9.2). The eight winners of the play-off round (four each from both West Region and East Region) advanced to the group stage to join the 24 direct entrants. All losers in each round from associations with only play-off slot entered the AFC Cup group stage.<section end=Format />
The schedule of each round is as follows.
<section begin=Bracket /> The bracket of the qualifying play-offs for each region, determined based on the association ranking of each team, with the team from the higher-ranked association hosting the match, was officially announced by the AFC prior to the group stage draw on 22 November 2018. Teams from the same association could not be placed into the same tie.<section end=Bracket />
A total of six teams played in the preliminary round 1. <section begin=Preliminary round 1 />
|+West Region
|+East Region
<section end=Preliminary round 1 />
A total of 16 teams played in the preliminary round 2: 13 teams which entered in this round, and three winners of the preliminary round 1. <section begin=Preliminary round 2 />
|+West Region
|+East Region
<section end=Preliminary round 2 />
A total of 16 teams played in the play-off round: eight teams which entered in this round, and eight winners of the preliminary round 2. <section begin=Play-off round />
|+West Region
|+East Region
<section end=Play-off round />