2005–06 Celtic League

The final table was dominated by the Irish, with the top three spots taken by Ulster, Leinster and Munster respectively.

Due to the odd number of teams participating, for every round of fixtures, one team has a so-called "free weekend".

Each time this occurred, the team was awarded four points, so although at the end of the season it did not alter the positions (each team has a guaranteed 8 points), the table is skewed during the season according to the fixtures.

Due to the uneven number of participating teams, each team had two free weekends and were awarded 4 match points each time.

Note: Flags to the left of player names indicate national team as has been defined under IRB eligibility rules, or primary nationality for players who have not yet earned international senior caps.