U18 Boys – Nox Bailey Shield Winners
Championship winners
For Championships held from 2016 onwards, click on the link to view more information on that Championship
| 1989 | NSW in Sydney | 2005 | Vic in Perth | |
| 1990 | Qld in Perth | 2006 | Vic in Launceston | |
| 1991 | Vic in Brisbane | 2007 | NSW in Canberra | |
| 1992 | WA in Melbourne | 2008 | ACT in Brisbane | |
| 1993 | Qld in Canberra | 2009 | WA in Canberra | |
| 1994 | NSW in Perth | 2010 | NSW in Perth | |
| 1995 | NSW in Brisbane | 2011 | Vic in Melbourne | |
| 1996 | WA in Melbourne | 2012 | Qld in Canberra | |
| 1997 | NSW in Sydney | 2013 | Qld in Perth | |
| 1998 | NSW in Adelaide | 2014 | NSW in Canberra | |
| 1999 | NSW in Perth | 2015 | NSW in Perth | |
| 2000 | NSW in Canberra | 2016 | NSW in Sydney | |
| 2001 | ACT in Brisbane | 2017 | Qld in Brisbane | |
| 2002 | ACT in Melbourne | 2018 | Qld in Sydney | |
| 2003 | ACT in Sydney | 2019 | Qld in Sydney | |
| 2004 | ACT in Adelaide | 2020 | Qld in Sydney |
