The 2022–23 European Rugby Champions Cup pool stage will be the first stage of the 28th season of pan-European professional club rugby union competition, and the ninth under the European Rugby Champions Cup format. Twenty-four clubs from three major domestic and regional leagues will compete over four rounds of pool fixtures, with 16 teams progressing to the knockout stages. For the first time, teams from South Africa are also involved, after qualifying from the inaugural United Rugby Championship season.