Mary Ann Viverette is Chief of Police of the Gaithersburg (MD) Police Department. Chief Viverette has been with the Gaithersburg Police since 1979, holding all ranks until her appointment as Chief of Police in 1986.

Chief Viverette holds a Bachelor of Science degree in Law Enforcement/Criminology from the University of Maryland and a Master of Science Degree in Human Resource Management from the University of Maryland. She is a graduate of the FBI national Academy, Session 155.

Chief Viverette was elected in November 1999 as a Vice President of the Board of Officers of the International Association of Chiefs of Police (IACP). The IACP is an organization of more than 18,000 members from the world's law enforcement community with members in 109 countries.

Chief Viverette served as a Vice-President of the National association of Women Law Enforcement Executives (NAWLEE) and she was one of the founding members of the Association. She currently serves on the Maryland Chiefs of Police Association's Executive and Training Committees, the D.A.R.E. America Advisory Board, and the National Advisory Board for CommUNITY 2000 - a national project to strengthen communities for the 21st century. She was recently appointed by Governor Glendening to Maryland's Vehicle Theft Prevention Council. She also serves on the Advisory Board of the Police Executive Research Forum's Criminal Justice/Mental Health Consensus Project and on IACP's Victim Services Advisory Board.

Chief Viverette is an Assessor with the Commission of Accreditation for Law Enforcement Agencies (CALEA), and she served on the 1994 and 1998 Standards Review Committes, which streamlined and updated national law enforcement standards. Her department was accredited in 1993, and reaccredited in 1998.

In 1995, the Gaithersburg Police Department received the US Conference of Mayor's "Livability Award" for its Community Policing efforts citywide.