Frank Brazil Dineen’s greater legacy is the acquisition, and subsequently donation to the GAA, of Croke Park, now the headquarters of the Gaelic Athletic Association (GAA) in Dublin, for which he was honoured and celebrated on different occasions during the past 10 years. ^{[1] [2]}

In February of 1970, a headstone over the grave of Dineen, in Glasnevin Cemetery, in Dublin, was unveiled by the then president of the GAA, Seamus O'Riain, with the presence of Dineen's family members and representatives from the GAA executive committee. ^[3]

In April 2006, along with other sections of the stadium dedicated to prominent figures of the GAA, the terrace firstly built in 1917 and previously known as Hill 16, was officially re-named Dineen Hill 16 in Frank Dineen’s honour. ^{[4] [5] [6]} Dineen/Hill 16 Terrace now holds up to 13,000 people. ^[7]

In 2009, the Shamrocks Ballylanders GAA Club honoured Frank Dineen, its founding member, with a two days long event, named “The Birth of Croke Park in the Ballyhoura Mountains”, held in South East Limerick. RTÉ broadcaster and commentator Micheál Ó Muircheartaigh, Martinstown Historical Society and historians Larry Ryder, Tony O’Donoghue and Dr Cyril White, participated in the opening of the event. ^{[8] [9] [10]} The festival consisted in a series of lectures, where historians recalled Dineen contributions to the GAA, followed by the unveiling of the specially commissioned commemorative plaque, dedicated to Dineen, by the President of the GAA Club, Criostóir Ó Cuana, on the gable wall of McDermott’s pub and the Ballylanders Club. ^{[9] [8] [10]} The Ballysanders’s GAA Club also announced a collaboration with the country’s famous GAA historian, Harry Greensmyth, and launched a 140 pages book about the Life and Times of Frank B Dineen. ^{[9] [8]}

In December 2013, in honour of the 100th anniversary of his donation and the establishment of Croke Park as the GAA headquarters, Frank Dineen was once again celebrated, when framed copies of the original deeds for Croke Park were presented to Dineen’s relatives and to representatives from the Shamrocks Ballylanders GAA Club. ^{[11] [6]} The deeds of the 14 acres on Jones Road in Northsides Dublin were originally acquired by Dineen in 1908, for £3.250 and consequently acquired by the GAA in 1913. ^{[11] [6]}
As today Frank Brazil Dineen is the only man who served as both President, between 1895 and 1898, and Secretary, between 1898 and 1901, of the GAA. ^{[6] [8] [7]}