| Year | Champion | Runner-Up |
| 1960 | No Champion Declared | |
| 1961 | No Champion Declared | |
| 1962 | No Champion Declared | |
| 1963 | Columbia University (USA) | University of North Carolina (USA) |
| 1964 | University of Texas (USA) | |
| 1965 | Columbia University (USA) | University of Virginia (USA) |
| 1966 | University of Texas (USA) | University of Wisconsin (USA) |
| 1967 | Vanderbilt University (USA) | Harvard Law School (USA) |
| 1968 | Duke University (USA) | University of Miami (USA) |
| 1969 | Tie: Rutgers University, Newark (USA) University of Michigan (USA) |
|
| 1970 | University of Miami (USA) | University of Kentucky (USA) |
| 1971 | University of Texas (USA) | University of California (USA) |
| 1972 | University of Miami (USA) | Haile Sellassie I University (Ethiopia) |
| 1973 | West Virginia University (USA) | Brunel University (U.K.) |
| 1974 | University of Texas (USA) | Haile Sellassie I University (Ethiopia) |
| 1975 | Cambridge University (U.K.) | Georgetown University (USA) |
| 1976 | University of Toronto (Canada) | American University, Washington College of Law (USA) |
| 1977 | University of Kansas (USA) | University of Toronto (Canada) |
| 1978 | Brooklyn Law School (USA) | University of Toronto (Canada) |
| 1979 | Northwestern University (USA) | University of Adelaide (Australia) |
| 1980 | Georgetown University (USA) | National University of Singapore (Singapore) |
| 1981 | Australian National University (Australia) | University of the Pacific (USA) |
| 1982 | National University of Singapore (Singapore) | University of the Pacific (USA) |
| 1983 | University of Kansas (USA) | National University of Singapore (Singapore) |
| 1984 | Dalhousie University (Canada) | South Texas College of Law (USA) |
| 1985 | National University of Singapore (Singapore) | Southwestern University (USA) |
| 1986 | Boston College (USA) | National University of Singapore (Singapore) |
| 1987 | Georgetown University (USA) | Katholieke Universiteit, Leuven (Belgium) |
| 1988 | University of Melbourne (Australia) | National University of Singapore (Singapore) |
| 1989 | University of British Columbia (Canada) | University of Melbourne (Australia) |
| 1990 | University of Georgia (USA) | University of Toronto (Canada) |
| 1991 | University of Saskatchewan (Canada) | University of Georgia (USA) |
| 1992 | Universite de Paris I (France) | National University of Singapore (Singapore) |
| 1993 | University of Melbourne (Australia) | University of Hawaii (USA) |
| 1994 | National University of Singapore (Singapore) | University of Melbourne (Australia) |
| 1995 | University of the Philippines (Philippines) | University of Western Australia (Australia) |
| 1996 | University of Sydney (Australia) | National University of Singapore (Singapore) |
| 1997 | Universidad Catolica Andres Bello (Venezuela) | University of Calgary (Canada) |
| 1998 | Universidad Autonoma Nacional de Mexico (Mexico) | Australian National University (Australia) |
| 1999 | National Law School of India University (India) | University of Pretoria (South Africa) |
| 2000 | University of Melbourne (Australia) | Universidad Catolica Andres Bello (Venezuela) |
| 2001 | National University of Singapore (Singapore) | Universidad Catolica Andres Bello (Venezuela) |
| 2002 | University of the Witwatersrand (South Africa) | University of Western Australia (Australia) |
| 2003 | University of Western Australia (Australia) | Mari State University (Russia) |
| 2004 | Ateneo de Manila University (Philippines) | National University of Singapore (Singapore) |
| 2005 | University of Queensland (Australia) | International Islamic University (Malaysia) |
| 2006 | Columbia University (USA) | Universidad Catolica Andres Bello (Venezuela) |
| 2007 | University of Sydney (Australia) | King's College London (United Kingdom) |
| 2008 | Case Western Reserve University (USA) | University of New South Wales (Australia) |