2023–24 Celtic Challenge

The 2023–24 Celtic Challenge was the second season of the Celtic Challenge, a cross-border women's rugby union competition with teams from Ireland, Wales, and Scotland. The enlarged six team tournament featured a single round robin fixture series, after which the six team table is split in two. This is followed by three further 'play-off' rounds in a set of three double-header fixtures. Each team will therefore play a seven match season.

Teams and locations
In December 2023, the six teams were confirmed.

Regular season
The fixtures were announced on 5 December 2023.

Play-offs
Unlike the inaugural competition, the 2023–24 competition will have a play-off stage. This involves splitting the teams into 2 tiers after the initial set of 5 rounds, the top 3 and the bottom 3. The teams will play the teams in their tier once more. The points from the all matches will count.