Glenn E. Martin (born October 30, 1970) is the President and Founder of GEMtrainers.com, a social justice consultancy firm that partners with non-profits from across the United States to assist with fundraising, organizational development and marketing. Glenn is a longstanding American criminal justice reform advocate and is the founder and former president of JustLeadershipUSA (JLUSA). He also founded the campaign, #CLOSErikers and co-founded the Education from the Inside Out Coalition, a national campaign working to remove barriers to higher education facing students while they are in prison and once they are released.