| 2016 |
Castle hosts Irish Boys Amateur Championship. |
| 2015 |
After 50 years at the Castle, David Kinsella retires as Club Professional |
| 2013 |
Castle GC celebrates its centenary with a year long calendar of events. |
| 2011 |
The club hosts first Mother and Daughter Foursomes competition. 50th anniversary of All Ireland Father & Son Competition. |
| 2000-2002 |
Course is redesigned and redeveloped. Clubhouse is extended and completely refurbished. |
| 1999 |
Work begins on reconstruction of all eighteen greens to USGA sand-based standard. |
| 1989 |
Philip Walton wins Irish PGA Championship at Castle. |
| 1988 |
Eamonn Darcy wins Irish PGA Championship at Castle. |
| 1986 |
25th anniversary of All Ireland Father & Son Competition. |
| 1976 |
New clubhouse officially opened. |
| 1972 |
Club Professional Jimmy Kinsella becomes the first Irish winner on the European Tour when he wins the Madrid Open at Club de Campo near Madrid. David Kinsella is appointed Club Professional. |
| 1970 |
Clubhouse destroyed by fire |
| 1966 |
Jimmy Kinsella is appointed Club Professional. |
| 1965 |
Willie Holley retires as Club Professional after 44 years dedicated service. |
| 1961 |
First All-Ireland Father and Son Foursomes competition is played. The winners are Castle members Dick and Tom Lenehan. |
| 1954 |
North v South professional match was played at Castle, a highlight being the drawn match between Fred Daly and Harry Bradshaw. |
| 1950 |
Harry Bradshaw wins Dunlop 250 at Castle |
| 1946 |
Fred Daly wins Dunlop 500 at Castle. |
| 1941 |
Castle wins its first club pennant - The Barton Cup. |
| 1938 |
The club hosts the Irish Close Championship which is won by the great Jimmy Bruen as well as the GUI All Ireland Club finals. |
| 1934 |
Scotland v Ireland professional international match played at Castle. |
| 1928 |
Henry Cotton and Jack Smith played a match against Willie Holley and Willie Nolan. |
| 1926 |
Opening of new club house by Club President Lord Glenavy. |
| 1918/1919 |
Harry S. Colt, one of the foremost golf course designers of the time, updates the original design. |
| 1917/1918 |
Club is sold to members by its original owners William George Bailey and Adam Henry Gibson. |
| 1916 |
Castle member Michael Joseph O’Rahilly is killed in the GPO during the Easter Rising. 2nd Lt Henry W Gibson, son of A H Gibson, dies of wounds received at Gallipoli. |
| 1915 |
Official opening of Castle GC takes place on 26th of June. Shortly afterwards the club hosts a Golfing Tournament for professional golfers of Leinster in aid of the Red Cross. |
| 1913 |
The inaugural meeting of the Club is held in the Hotel Ivanhoe, Harcourt Street in early February. Cecil Barcroft, W.C. Pickeman and Tom Hood (Professional at Royal Dublin Golf Club) designed the original layout of the golf course. Dr Douglas Hyde, later to become the first President of Ireland, was an early member. |
| 1912 |
A firm of builders, Bailey & Gibson, acquires the estate of Rathfarnham Castle which dates back to Norman days. They plan to develop a ‘city garden’ housing scheme with a golf club at its centre. |