LESI has benefited from the guidance and leadership of numerous individuals through the years.
The following is a list of the past presidents of LESI:
| 1974 | - | John Gay | LES Britain & Ireland | 1993 | - | Larry Evans | LES USA/Canada |
| 1975 | - | Marcus Finnegan | LES USA/Canada | 1994 | - | Oliver Axster | LES Germany |
| 1976 | - | Bertil Hedberg | LES Scandinavia | 1995 | - | Norman Jacobs | LES USA/Canada |
| 1977 | - | Mitsuya Okano | LES Japan | 1996 | - | Jeremy Brown | LES Britain & Ireland |
| 1978 | - | Dudley Smith | LES USA/Canada | 1997 | - | Sam Layton, Jr. | LES USA/Canada |
| 1979 | - | Jacques Gaudin | LES France | 1998 | - | Rodney DeBoos | LES Australia/New Zealand |
| 1980 | - | John Stonier | LES Australia/New Zealand | 1999 | - | Planton Mandros | LES USA/Canada |
| 1981 | - | Sam Heijn | LES Benelux | 2000 | - | Heinz Goddar | LES Germany |
| 1982 | - | William Poms | LES USA/Canada | 2001 | - | Ed Shalloway | LES USA/Canada |
| 1983 | - | Henry Hodding | LES Britain & Ireland | 2002 | - | Thierry Sueur | LES France |
| 1984 | - | Fernando Pombo | LES Spain & Portugal | 2003 | - | Mel Jager | LES USA/Canada |
| 1985 | - | Michiko Ariga | LES Japan | 2004 | - | Jonas Gulliksson | LES Scandinavia |
| 1986 | - | Len Mackey | LES USA/Canada | 2005 | - | Willy Manfroy | LES USA/Canada |
| 1987 | - | Pierre Hug | LES Switzerland | 2006 | - | Peter Chrocziel | LES Germany |
| 1988 | - | Desmond Ryan | LES Australia/New Zealand | 2007 | - | Ron Grudziecki | LES USA/Canada |
| 1989 | - | Kenneth Payne | LES USA/Canada | 2008 | - | Chikao Fukuda | LES Japan |
| 1990 | - | Jean-Marc Portier | LES France | 2009 | - | Adam Liberman | LES Australia/New Zealand |
| 1991 | - | Fernando Noetinger | LES Argentina | 2010 | - | Patrick O'Reilley | LES USA/Canada |
| 1992 | - | Akira Mifune | LES Japan | 2011 | - | Alan Lewis | LES South Africa |
| | | | | 2012 | - | James Malackowski | LES USA/Canada |