| | Gabriella Vukovich |- | 2012 | 43rd | | Gabriella Vukovich |- | 2011 | 42nd | | Ali Bin Mahboob |- | 2010 | 41st | | Ali Bin Mahboob |- | 2009 | 40th | | Pali Lehohla |- | 2008 | 39th | | Pali Lehohla |- | 2007 | 38th | | Gilberto Calvillo Vives |- | 2006 | 37th | | Gilberto Calvillo Vives |- | 2005 | 36th | | Katherine Wallman |- | 2004 | 35th | | Katherine Wallman |- | 2003 | 34th | | Tamás Mellár |- | 2002 | 33rd | | Tamás Mellár |- | 2001 | 32nd | | Shigeru Kawasaki |- | 2000 | 31st | | Guest Charumbira |- | 1999 | 30th | | Guest Charumbira |- | 1997 | 29th | | Carlos Jarque |- | 1995 | 28th | | Bill Mclennan |- | 1994 | Special session | | Jozef Olenski |- | 1993 | 27th | | Willem Begeer |- | 1991 | 26th | | Willem Begeer |- | 1989 | 25th | | Luis Alberto Beccaria |- | 1987 | 24th | | Emmanuel Oti Boateng |- | 1985 | 23rd | | Tom Linehan |- | 1983 | 22nd | | Vera Nyitrai |- | 1981 | 21st | | Joseph W. Duncan |- | 1979 | 20th | | Mikhail Antonovich Korolev |- | 1976 | 19th | | V. R. Rao |- | 1974 | 18th | | Claus Moser |- | 1972 | 17th | | Jean Ripert |- | 1970 | 16th | | Jean Ripert |- | 1968 | 15th | | Keith Archer |- | 1966 | 14th | | Petter Jakob Bjerve |- | 1965 | 13th | | Petter Jakob Bjerve |- | 1962 | 12th | | Donal McCarthy |- | 1960 | 11th | | Donal McCarthy |- | 1958 | 10th | | George Wood |- | 1956 | 9th | | P.C. Mahalanobis |- | 1954 | 8th | | P.C. Mahalanobis |- | 1953 | 7th | | Harry Campion |- | 1951 | 6th | | Harry Campion |- | 1950 | 5th | | Philip Idenburg |- | 1949 | 4th | | Philip Idenburg |- | 1948 | 3rd | | Herbert Marshall |- | 1947 (August) | 2nd