Tammy Louise Mahon (born 4 November 1980) is a Canadian volleyball player. She is part of the Canadian women's national volleyball team. She competed at the 2003 FIVB World Grand Prix, 2004 Women's Pan-American Volleyball Cup, 2005 Women's Pan-American Volleyball Cup, 2006 Women's Pan-American Volleyball Cup, 2007 Women's Pan-American Volleyball Cup, 2007 Women's NORCECA Volleyball Championship, 2008 Women's Pan-American Volleyball Cup, 2009 Women's Pan-American Volleyball Cup, 2010 Women's Pan-American Volleyball Cup, 2011 Women's Pan-American Volleyball Cup, and 2011 Pan American Games.