Leinster Schools Junior Cup
Roll of honour · 118 finals since 1909
← Current seasonThe Leinster Schools Junior Cup has been played since 1909, and 12 schools have won it. Blackrock College hold the record with 53 titles. The most recent final, in 2026, was won by St Michael's College, who beat St Mary's College 14–10.
- Most titles
- Blackrock College, 53
- Longest winning run
- Belvedere College, 4 in a row (1916–1919)
- Most finals
- Blackrock College, 74
- Different winners
- 12
Most Titles
- Blackrock Collegelast 202353

- Belvedere Collegelast 200517
- Terenure Collegelast 201010

- St Michael's Collegelast 20268

- St Vincent's Castleknock Collegelast 19668

- St Mary's Collegelast 20247

- Clongowes Wood Collegelast 20085

- Presentation College Braylast 19905

- Newbridge Collegelast 20213

- Cistercian College Roscrealast 19391

- The High Schoollast 19381

- St Andrew's Collegelast 19091

Finals
2020s
- 2026
St Michael's College14-10St Mary's College
Energia Park (Donnybrook)
- 2025
St Michael's College73-0St Vincent's Castleknock College
Energia Park (Donnybrook)
- 2024
St Mary's College10-8Terenure College
Energia Park (Donnybrook)
- 2023
Blackrock College17-15St Michael's College
Energia Park (Donnybrook)
- 2022
St Michael's College26-19Cistercian College Roscrea
Energia Park (Donnybrook)
- 2021
Newbridge College19-15Blackrock College
Delayed to October 2021 due to Covid-19. · Energia Park
- 2020
Blackrock College & Newbridge College
Title shared. The final was not played due to Covid-19.
2010s
- 2019
St Michael's College26-19Blackrock College
Energia Park (Donnybrook)
- 2018
Blackrock College24-14St Mary's College
Energia Park (Donnybrook)
- 2017
St Michael's College31-17Blackrock College
After 7-7 draw · Energia Park (Donnybrook)
- 2016
Blackrock College8-3St Michael's College
Energia Park (Donnybrook)
- 2015
Blackrock College15-13Terenure College
Energia Park (Donnybrook)
- 2014
- 2013
- 2012
- 2011
- 2010
2000s
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2002
- 2001
- 2000
1990s
- 1999
- 1998
- 1997
- 1996
- 1995
- 1994
- 1993
- 1992
St Mary's College15-12Clongowes Wood College
After 8-8 draw
- 1991
- 1990
1980s
- 1989
Terenure College8-6Gonzaga College
After 0-0 draw
- 1988
- 1987
- 1986
Blackrock College7-0St Michael's College
After 6-6 draw
- 1985
Presentation College Bray14-0Templeogue College
- 1984
- 1983
- 1982
Blackrock College12-9Terenure College
After 3-3 draw
- 1981
- 1980
Blackrock College5-0Templeogue College
1970s
- 1979
- 1978
- 1977
- 1976
- 1975
- 1974
- 1973
Blackrock College4-0Presentation College Bray
After 9-9 draw
- 1972
- 1971
St Mary's College6-5Terenure College
After 3-3 draw
- 1970
1960s
- 1969
- 1968
Blackrock College12-3Belvedere College
After 3-3 draw
- 1967
- 1966
St Vincent's Castleknock College6-3De La Salle Churchtown
- 1965
- 1964
- 1963
St Mary's College3-0St Vincent's Castleknock College
After 3-3 draw
- 1962
- 1961
- 1960
Belvedere College3-0St Paul's College Raheny
1950s
- 1959
- 1958
- 1957
Blackrock College11-0Terenure College
After 0-0 draw
- 1956
- 1955
- 1954
- 1953
- 1952
- 1951
- 1950
1940s
- 1949
- 1948
- 1947
- 1946
- 1945
- 1944
- 1943
- 1942
- 1941
- 1940
1930s
- 1939
Cistercian College Roscrea9-0Newbridge College
After 0-0 draw
- 1938
- 1937
- 1936
- 1935
- 1934
St Mary's College6-0Mountjoy School
- 1933
Blackrock College6-3O'Connell School
- 1932
- 1931
Belvedere College3-0O'Connell School
After 0-0, 0-0 draws
- 1930
1920s
- 1929
- 1928
- 1927
Blackrock College12-0Masonic Boys School
- 1926
- 1925
- 1924
- 1923
- 1922
- 1921
St Vincent's Castleknock College46-0Presentation College Glasthule
- 1920
St Vincent's Castleknock College beat Blackrock College
Awarded a walkover.
1910s
- 1919
- 1918
Belvedere College beat St Vincent's Castleknock College
After 3-3, 0-0, 0-0 draws · Awarded a walkover.
- 1917
- 1916
Belvedere College5-0Kilkenny College
After 0-0 draw
- 1915
- 1914
Belvedere College13-0St Andrew's College
After 3-3 draw
- 1913
Belvedere College3-0Mount St Joseph's, Clondalkin
After 0-0 draw
- 1912
- 1911
- 1910
Blackrock College6-3Cistercian College Roscrea
After 0-0 draw
1900s
- 1909
Finals before 2015 from Wikipedia (CC BY-SA 4.0), with corrections. Later finals from official Leinster Rugby results.