The 1929 Auckland Rugby League season was its 20th. One of the key events of the season was the tour of the South Sydney side. The First Grade Championship was won by Ponsonby who defeated Devonport in the final 5–0. Marist won the Thistle Cup for competition points accrued during the second round of matches where they went undefeated. They also won the Roope Rooster trophy after defeating Ponsonby in the final 17–9. They weren't finished yet, defeating the same opponent to win the Stormont Shield 28–14. This was the second consecutive year that they won both of those trophies.