The Rostrevor Old Collegians' Football Club was established at a special meeting of the Christian Brothers Old Collegians' Football Club. The meeting was held at Rostrevor College on 23 February 1974 following a petition to call a special meeting to change the name of the club. Some of the signatories to the petition included Mick Murphy, Ian Altschwager, Frank Ali, David Clancey, Kim and Craig Peters. The motion to change the name was passed and the new Rostrevor Old Collegians' Football Club was formed.
The Committee at the time comprised of: T Kendall, J McAuliffe, M Abbot, M Lower, K Milne, D Sandery, D Farrugia, M Murphy, M Heffernan, P Coughlin and R Wasley. At the opening meeting the treasurer reported a balance of $122 in the general account and $47 in the social account. In this inaugural year, the Club competed in A4 and A4 reserves with the latter winning the premiership. In 1979 a third side was introduced with a fourth team in 1981.
To date a total of 18 premierships have been won. The A grade have won 4 flags whilst the B's have won 7 flags and the C grades have won 7.
The club has produced 13 league medallists:
- Peter Franklin (A4 1974)
- Frank Wolff Jnr. (A3 Res 1976)
- Chris Hayward (A9 1981)
- Michael Carey (A3 1983)
- John Jonas (A8 Res 1991)
- Sean Ryan (A2 Res 1991)
- Matthew Haddad (A2 Res 1995)
- Joe Walsh (A9 1998)
- Marcus Trimboli x 3(P2 1996 & D2 1998 and D2 2001)
- Ric Giles (2007 Div 1)
- Mark Green (2010 Div 2 reserves)