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Sheriff Dennis M. Lemma (R)



AA degree, 2001; BS degree, criminal justice administration, Columbia College, 2007; Master's degree, administrative leadership, University of Oklahoma, 2011; FBI National Academy graduate, Session 236; FDLE Chief Executive Institute, graduate.


U.S. Marine Corps. Received honorable discharge, 2003.


Seminole County Sheriff’s Office, 1992-present; Correctional officer, 1992-1996; deputy sheriff, school resource deputy, crimes against children investigator, 1996-2002; promoted to sergeant of Special Operations Section, 2002; promoted to lieutenant of Community Services Division in 2006; promoted to captain of the Uniformed Patrol Division, Property Crime Investigations, Traffic Safety and Code Enforcement, 2008; appointed as major of the Department of Neighborhood Policing over five divisions including Uniformed Patrol, Special Operations, Juvenile Enforcement and Intervention, Public Affairs and Community Services, 2011; Appointed as chief deputy, 2014; ran unopposed and elected Sheriff of Seminole County, 2016.

Honors and Affiliations

Community Service Award recipient; Hugh Thomas Excellence Award recipient; Puerto Rican Award recipient, 2018; member, Aspire Healthcare Board of Directors; member, Central Florida Homeless Coalition Executive Board; member, Central Florida Crimeline Board of Directors; member, FBI National Academy Associates (FBINAA); member, International Association of Chiefs of Police (IACP); member, Large Jail Network; member, Major County Sheriffs of America; member, National Sheriffs Association; member, Police Executive Research Forum (PERF); member, Kids House of Central Florida Board of Directors; member, Boy Scouts of America Central Florida Council Board of Directors; member, Boys & Girls Club of Central Florida Board of Directors; member, Florida Criminal Justice Executive Institute Board of Directors.