Group B of the 2023 FIFA Women's World Cup was one of eight groups that formed the opening round of the tournament with the matches played from 20 to 31 July 2023.[1] The group consisted of hosts Australia, the Republic of Ireland, Nigeria and Canada. The top two teams, Australia and Nigeria, advanced to the round of 16.[2]
Canada became the first reigning Olympic champions to be eliminated in the subsequent Women's World Cup group stage. A win against Canada ensured Australia avoided a first group stage elimination since 2003, and following the elimination of fellow hosts New Zealand, assured every Women's World Cup up to 2023 had a host country participating in the knockouts. Nigeria progressed to the knockout stage for only the third time in their ninth Women's World Cup.