Played between the champions of the Northern and Southern leagues to determine "The Champion Lacrosse Club of England". Up until 2013 the representatives of each league were determined by the winner of their respective Flags competitions, but after that it changed to the League winners. From 2018 the competition also became known as the National Club Championship.
The Iroquois Cup itself was actually first awarded in 1896. The previous three matches were contested as the Championship of England, and have been included here for completeness.
| Year | Winner | Result | Runner-up |
|---|---|---|---|
| 2024 | Hampstead | 16 - 11 | Heaton Mersey |
| 2023 | Hampstead | 14 - 10 | Stockport |
| 2022 | Spencer | 11 - 10 (OT) | Cheadle |
| 2019 | Hampstead | w/o | Cheadle |
| 2018 | Poynton | 12 - 11 (OT) | Hampstead |
| 2013 | Stockport | 11 - 3 | Spencer |
| 2012 | Stockport | 16 - 3 | Spencer |
| 2011 | Cheadle | 26 - 6 | Walcountian Blues |
| 2010 | Stockport | 25 - 3 | Walcountian Blues |
| 2009 | Cheadle | 22 - 6 | Spencer |
| 2008 | Wilmslow | 17 - 9 | Hampstead |
| 2007 | Manchester Waconians | w/o | Purley |
| 2005 | Stockport | Hampstead | |
| 2004 | Stockport | 11 - 8 | Purley |
| 2003 | Cheadle | 11 - 8 | Purley |
| 2002 | Heaton Mersey | 18 - 4 | Purley |
| 2001 | Cheadle | 11 - 8 | Purley |
| 2000 | Cheadle | 12 - 9 | Purley |
| 1999 | Stockport | Kenton | |
| 1998 | Cheadle | Hampstead | |
| 1997 | Mellor | 36 - 0 | Purley |
| 1996 | Stockport | Kenton | |
| 1995 | Cheadle | Kenton | |
| 1994 | Cheadle | Kenton | |
| 1993 | Cheadle | 12 - 4 | Kenton |
| 1992 | Cheadle | 21 - 2 | Kenton |
| 1991 | Cheadle | 17 - 5 | Hampstead |
| 1990 | Cheadle | 23 - 6 | Hampstead |
| 1989 | Stockport | 20 - 7 | Hampstead |
| 1988 | Mellor | 22 - 7 | Hampstead |
| 1987 | Stockport | 33 - 4 | London Uni |
| 1986 | Heaton Mersey | 20 - 8 | Hampstead |
| 1985 | Cheadle | 19 - 4 | London Uni |
| 1984 | Cheadle | 16 - 5 | Hampstead |
| 1983 | Sheffield Uni | 30 - 1 | Kenton |
| 1982 | Sheffield Uni | 30 - 5 | Hampstead |
| 1981 | Cheadle | 16 - 5 | Hampstead |
| 1980 | S Manchester & Wythenshawe | 22 - 10 | Oxford Uni |
| 1979 | Cheadle | 28 - 6 | Buckhurst Hill |
| 1978 | Cheadle | 23 - 2 | Hampstead |
| 1977 | Sheffield Uni | 20 - 8 | Hampstead |
| 1976 | Hampstead | 20 - 8 | Old Hulmeians |
| 1975 | Urmston | 23 - 5 | Lee |
| 1974 | Urmston | 12 - 6 | Lee |
| 1973 | South Manchester | 12 - 10 | Lee |
| 1972 | South Manchester | 17 - 4 | Lee |
| 1971 | South Manchester | 15 - 6 | Lee |
| 1970 | Lee | 10 - 7 | South Manchester |
| 1969 | Mellor | 11 - 3 | Hampstead |
| 1968 | Old Hulmeians | 13 - 3 | Lee |
| 1967 | Mellor | 15 - 1 | Purley |
| 1966 | South Manchester | 17 - 3 | Cambridge Uni |
| 1965 | Mellor | 19 - 3 | Cambridge Uni |
| 1964 | Old Hulmeians | 21 - 5 | Lee |
| 1963 | Mellor | 15 - 4 | Cambridge Uni |
| 1962 | Old Hulmeians | 10 - 5 | Cambridge Uni |
| 1961 | Boardman & Eccles | 10 - 4 | Oxford Uni |
| 1960 | Heaton Mersey | 7 - 3 | Cambridge Uni |
| 1959 | Heaton Mersey | 11 - 2 | Cambridge Uni |
| 1958 | Heaton Mersey | 11 - 4 | Oxford Uni |
| 1957 | Old Mancunians | 6 - 3 | Cambridge Uni |
| 1956 | Cambridge Uni | 8 - 4 | Old Hulmeians |
| 1955 | Old Waconians | 12 - 6 | Cambridge Uni |
| 1954 | Heaton Mersey | 10 - 8 | Cambridge Uni |
| 1953 | Old Waconians | 17 - 2 | Purley |
| 1952 | Old Waconians | 11 - 5 | Purley |
| 1951 | Old Waconians | 12 - 0 | Oxford Uni |
| 1950 | Old Hulmeians | 18 - 4 | Cambridge Uni |
| 1949 | Old Hulmeians | 12 - 4 | Cambridge Uni |
| 1948 | Mellor | 10 - 4 | Cambridge Uni |
| 1947 | Old Waconians | 17 - 5 | Hampstead |
| 1939 | Old Waconians | 13 - 5 | Hampstead |
| 1938 | Old Waconians | 12 - 2 | Willoughby |
| 1937 | Mellor | 10 - 7 | Hampstead |
| 1936 | Mellor | 18 - 2 | Surbiton |
| 1935 | Mellor | 17 - 5 | Cambridge Uni |
| 1934 | Stockport | 17 - 2 | Cambridge Uni |
| 1933 | S Manchester & Wythenshawe | 10 - 0 | Oxford Uni |
| 1932 | Old Hulmeians | 13 - 1 | Oxford Uni |
| 1931 | Oxford Uni | 13 - 8 | Stockport |
| 1930 | Old Mancunians | 4 - 3 | Oxford Uni |
| 1929 | Boardman | 7 - 3 | Lee |
| 1928 | Stockport | 7 - 6 | Oxford Uni |
| 1927 | Heaton Mersey | 9 - 2 | Oxford Uni |
| 1926 | Stockport | 24 - 2 | Buckhurst Hill |
| 1925 | Albert Park | 15 - 4 | Buckhurst Hill |
| 1924 | Stockport | 20 - 8 | Hampstead |
| 1923 | Stockport | 13 - 1 | Oxford Uni |
| 1922 | Boardman | 14 - 5 | Lee |
| 1921 | Lee | 11 - 8 | Boardman |
| 1914 | Old Hulmeians | 22 - 2 | Lee |
| 1913 | Stockport | 23 - 4 | Lee |
| 1912 | Stockport | 18 - 8 | Lee |
| 1911 | Stockport | 15 - 5 | Lee |
| 1910 | Old Hulmeians | 20 - 6 | Catford |
| 1909 | South Manchester | 15 - 3 | Catford |
| 1908 | Old Hulmeians | 4 - 1 | Surbiton |
| 1907 | Old Hulmeians | 12 - 0 | Surbiton |
| 1906 | South Manchester | 10 - 6 | Surbiton |
| 1905 | Stockport | 7 - 3 | Surbiton |
| 1904 | S Manchester & Wythenshawe | 12 - 4 | Catford |
| 1903 | Stockport | 9 - 5 | Woodford |
| 1901 | Stockport | 11 - 2 | Woodford |
| 1900 | Stockport | 7 - 2 | Woodford |
| 1899 | Stockport | 14 - 3 | West London |
| 1898 | Stockport | 11 - 1 | Surbiton |
| 1897 | Stockport | 8 - 2 | West London |
| 1896 | Surbiton | 2 - 1 | Stockport |
| 1895 | South Manchester | 14 - 3 | Snaresbrook |
| 1890 | South Manchester | 15 - 9 | West London |
| 1887 | Owens College | 3 - 1 | Clapton |