2023 All-Ireland Senior Ladies' Football Championship

The 2023 All-Ireland Senior Ladies' Football Championship was the 50th edition of the Ladies' Gaelic Football Association's premier inter-county ladies' Gaelic football tournament, taking place in summer 2023 in Ireland. Holders were aiming for a three-in-a-row, but were defeated by, who went on to lose the final to.

Provincial championships
The 12 teams first play in their provincial championships; in Connacht there are two teams and the championship is played as a single match.

In Leinster and Ulster there are three teams in the provincial championship. They play each other in a round-robin phase, with two teams progressing to the final.

In Munster there are four teams in the provincial championship. They play each other in a round-robin phase, with two teams progressing to the final.

Group stage
The 12 teams are drawn into four groups of three teams; seeding is based on performance in the provincial championships. Each team plays each other team in its group once, earning three points for a win and one for a draw.

Relegation
The last-placed teams in the groups play off to decide which team is relegated to the All-Ireland Intermediate Ladies' Football Championship.

Knockout stage
The top two in each group progress to the All-Ireland quarter-finals. Quarter-finals and semi-finals are "results on the day," with 20 minutes' extra time being played in the event of a draw, and a free-kick shootout being taken from a 30 m distance in the event of a draw after extra time. If the All-Ireland final is a draw, the game is replayed.

Tiebreakers for group ranking
If two teams are level on points, the tie-break is:
 * winners of the head-to-head game are ranked ahead
 * if the head-to-head match was a draw, then whichever team scored more points in the game is ranked ahead (e.g. 1-15 beats 2–12)
 * if the head-to-head match was an exact draw, ranking is determined by the points difference (i.e. total scored minus total conceded in all games)
 * if the points difference is equal, ranking is determined by the total scored

If three teams are level on league points, rankings are determined solely by points difference.

Connacht Senior Ladies' Football Championship
Final

Leinster Senior Ladies' Football Championship
Group Stage Final

Munster Senior Ladies' Football Championship
Group Stage Final

Ulster Senior Ladies' Football Championship
Group Stage Final

All-Ireland group stage
Group games take place 17 June – 1 July, 2023.

Relegation playoffs
 are relegated to the All-Ireland Intermediate Ladies' Football Championship for 2024.

Protest
The start of the group stage match between Mayo and Laois was delayed due to a protest by the players of both teams. Both teams wore t-shirts that said #UNITEDFOREQUALITY during the warm up and went back to the dressing room for approximately 5 minutes after the national anthem was played. The protest was about delays from the LFGA, Camogie Association and GAA to develop a charter for inter-county players. Other teams that played on July 1 also wore the same t-shirts.