Ronald Sellon is the Police Chief for the town of Mansfield Massachusetts. He is a military veteran, holds a Bachelor's degree in Law Enforcement, Masters degree in Public Safety Administration, and Juris Doctor law degree. He is a licensed attorney in Massachusetts and Boston Federal court, a graduate of the FBI National Academy session 245 and Police Executive Research Forums Senior Management Institute Session 65.

As Police Chief, in addition to his other duties he is responsible for public safety at the Xfinity Center, a 20,000 seat outdoor amphitheater in Mansfield that welcomes between 30 and 40 concerts every summer.

He sits on the executive board of the Bristol County Police Chiefs Association, and is currently the 1st Vice President of the Metropolitan Law Enforcement Counsel, which provides mutual aid facilitation of various specialized services for over 40 communities and a million residents in the Boston metro area. In this capacity he is also a control Chiefs for the the SWAT, Negotiators, and Command post. He currently sits on the International Association of Chiefs of Police Human and Civil Rights committee.