| Biographical details | |
|---|---|
| Born | Mineola, New York |
| Playing career | |
| 1965–1967 | Rutgers |
| Position(s) | Defenseman (lacrosse) Wide receiver (football) |
| Coaching career (HC unless noted) | |
| 1970–1972 | Cortland State |
| 1973–1983 | Washington and Lee |
| 1984–2005 | Army |
| Head coaching record | |
| Overall | 326–184 |
| Accomplishments and honors | |
| Championships | |
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| Awards | |
As coach:
As player:
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John S. Emmer is a former American lacrosse coach. He retired in 2005 with 326 wins, making him the lacrosse coach with the most wins in NCAA history. This mark was surpassed in 2008 by Jim Berkman of Division III Salisbury University. Emmer is one of only two head coaches to have led three different teams to the NCAA men's lacrosse tournament.