The bracket of the qualifying play-offs for each region was determined based on each team's
association ranking and their seeding within their association, with the team from the higher-ranked association hosting the match in the West Region. Teams from the same association could not be placed into the same tie. 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 32 direct entrants.
Play-off West 1 •
AGMK advanced to
Group A.
Play-off West 2 •
Al-Quwa Al-Jawiya advanced to
Group B.
Play-off West 3 •
Foolad advanced to
Group D.
Play-off West 4 •
Al-Wahda advanced to
Group E.
Play-off East 1 •
Kaya–Iloilo advanced to
Group F.
Play-off East 2 •
Cerezo Osaka advanced to
Group J after
Shan United and
Melbourne City both withdrew from the competition.
Play-off East 3 •
Pohang Steelers and
Ratchaburi Mitr Phol advanced to
Group G after
Jiangsu withdrew from the competition and folded.
Play-off East 4 •
Daegu FC advanced to
Group I, and
Chiangrai United advanced to
Group H. ==Preliminary round==