Brian Dillons is one of the oldest Gaelic Athletics Association clubs in Cork city in Ireland.

The club is now based at the Tank Field in Montenotte (<1 km to the east) and has playing pitches and dressing rooms at Lisnahorna, White's Cross.

The breakaway club, called Glen Rovers GAA, was established late in 1916 and affiliated the following year.

Daniel Corkery, the politician, writer and academic (and teacher at nearby St Patrick's School) was elected the president of Brian Dillons in 1931.

Brian Dillons footballers beat their northside neighbours Delanys on a scoreline of 1–12 to 1–7 after extra time.

On 7 November of that year, Dillons lost the County Hurling Championship Final to St Catherine's GAA (0–13 to 0–12).

On 25 August 2019, Brian Dillons won the City Hurling Championship defeating Whitechurch GAA (0–21 to 0–12) in the final.

On 25 September 2020, Brian Dillons won the City Hurling Championship defeating Passage West (2–16 to 1–17) in the final at Ballinlough.