Old Crescent is a senior rugby club in Limerick, playing in Division 2A of the All-Ireland League.

Fr Gerry Guinane, who trained rugby in the College, saw great potential in that winning team and persuaded them to stay and play together.

Membership was initially confined to past pupils of Crescent College SJ, however it has been an 'open club' for many years.

Father Guinane’s belief in the original team was justified as in 1950/51 it reached the Munster Junior Cup final losing out to Cork Constitution five points to three and in 1954/55 again won through to the Munster Senior Cup final losing out in the end to UCC.

In 1961/62 under the captaincy of Billy Leahy the club again reached the Munster Senior Cup Final only to lose to Bohemians.