The 2023–24 European Rugby Champions Cup pool stage was the first stage of the 29th season of pan-European professional club rugby union competition, and the tenth under the European Rugby Champions Cup format.
Twenty-four clubs from three major domestic and regional leagues competed over four rounds of pool fixtures, with 16 teams progressing to the knockout stages.
[1] The complete fixture list was then announced on 13 July 2023.
The top four teams in each pool progress to the round of 16, whilst the teams ranked 5th progresses to the knockout stages of the 2023–24 EPCR Challenge Cup.
[5] If two or more clubs in the same pool are equal on match points, their ranking will be determined as follows:[6]