IBA Junior Inter Association Championship – Past Winners
Winners of the Junior (Under 25) Inter-Association Championship – Chapman Trophy
| 2026 | NIPGL |
| 2025 | NIPGL |
| 2024 | NIPGL |
| 2023 | NIPBA |
| 2022 | NIPGL |
| 2019 | NIPGL |
| 2018 | NIPGL |
| 2017 | NIPBA |
| 2016 | NIBA |
| 2015 | NIPGL |
| 2014 | NIPGL |
| 2013 | NIPBA |
| 2012 | NIPGL |
| 2011 | NIPBA |
| 2010 | NIBA |
| 2009 | NIPBA |
| 2008 | NIBA |
| 2007 | NIPGL |
| 2006 | NIBA |
| 2005 | NIBA |
| 2004 | NIPGL |
| 2003 | NIPBA |
| 2002 | NIPGL |
| 2001 | NIPGL |
| 2000 | NIBA |
| 1999 | NIBA |
| 1998 | NIBA |
| 1997 | NIBA |
| 1996 | NIPGL |
| 1995 | NIBA |
| 1994 | NIPGL |
| 1993 | NIBA |
| 1992 | NIBA |
| 1991 | NIBA |
| 1990 | NIBA |
Winners of the Junior Inter-Association Championship – (Limited to players not competing in Senior competitions)
| 1989 | NIPBA |
| 1988 | NIPBA |
| 1987 | NIPBA |
| 1986 | NIPBA |
| 1985 | NIPBA |
| 1984 | NIPBA |
| 1983 | NIPBA |
| 1982 | NIBA |
| 1981 | NIPGL |
| 1980 | NIPGL |
| 1979 | NIPGL |
| 1978 | NIPGL |
| 1977 | NIPGL |
| 1976 | NIBA |
| 1975 | NIBA |
| 1974 | NIPGL |
| 1973 | NIPGL |
| 1972 | NIPGL |
| 1971 | NIPBA |
| 1970 | NIBA |
| 1969 | NIBA |
| 1968 | NIPGL |
| 1967 | NIBA |
| 1966 | NIPGL |
| 1965 | NIBA |
| 1964 | NIBA |
| 1963 | NIBA |
| 1962 | NIPBA |
| 1961 | NIPGL |
| 1960 | NIBA |
| 1959 | NIBA |
| 1958 | NIBA |
| 1957 | NIPGL |
| 1956 | NIPGL |
| 1955 | NIPGL |
| 1954 | NIPGL |
