• Oakley, Rhys (2002-2003)
• O'Connell, Jack (2014-2018)
• O'Conor, Piers (2018-2022)
• Ogilvie-Bull, James (1999-2000)
• Oniyide Frampton, Jonathan (2003-2004)
• O'Riordan, Brian (2006-2008)
• Orledge, Bob (1971-1972)
• Otto, Fautua (2011-2014)
• Ovens, Josh (2011-2016)
• Owen, David (1971-1972)