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- Mathew Charles Lamb, spree killer acquitted on grounds of insanity, later killed in action while fighting for the Rhodesian Security Forces
- Thomas LaSorda, CEO of Chrysler Group
- Mike Lazaridis, CEO of Research in Motion, inventor of the BlackBerry
- Ken Lewenza, Sr., head of the CAW, Canadian Auto Workers
- Aaron Lowe and Megan Wing, figure skating pair
- Budd Lynch, announcer for the Detroit Red Wings
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