The underage boys and girls teams compete in the South East League and Championship (from under 10s to under 16's ).

They lost a Junior County Hurling Final in 1954 but were successful in winning the same competition in 1965.

The club reached the County Junior Hurling Final in 1995 and 2000 but were defeated by Killeagh and Nemo Rangers.

Ballinhassig went on to capture Munster Junior Club vs Ballinahinch of Tipperary and All Ireland Junior Club vs Black and Whites of Kilkenny also in this year, and went on to win the Premer Intermediate Title in 2005 against Aghada captained by Martin Coleman, Jnr , going on to win the Munster title after beating Ballyduff Upper of Waterford also reached the All Ireland Final of this competition losing to Dicksboro of Kilkenny at Croke Park in a tight contest.

[citation needed]About near a decade later in 2021, they would eventually lose the County Final to Boherbue played in Páirc Uí Choaimh.