[citation needed] Other notable moments in the club's history include winning the Leinster Club Senior Cup in 1936, a feat which remained unmatched amongst Clontarf teams for another 63 years, until the cup returned to Castle Avenue in April 1999.

Since attaining Division 1 status in 1997, Clontarf has maintained its position as one of the top twelve clubs in Ireland.

[citation needed] It has reached three All Ireland League division one finals, two of them to record winners Shannon.

The club has produced a number of professional rugby players such as Cian Healy, Emile Prior, Brian O'Driscoll, Tadgh Furlong, Matt D'Arcy, Michael None, and Joey Carbery.

[citation needed] For the 2018/2019 season, a Girls Youth team was set up and trains twice a week at the club.

[citation needed] The club also has a social committee, with theme nights, awards balls, golf outings, and Tag Rugby runs during the summer months.

In 2007/2008 the first team won the Leinster League cup beating St Mary's College in the final.