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Franklin County Prosecuting Attorney Ron O'Brien

RON O'BRIEN, Franklin County's 50th Prosecuting Attorney, is the former Columbus City Attorney, Columbus City Prosecutor and Franklin County Assistant Prosecuting Attorney. Ron O'Brien has over 40 years of governmental law service to the City of Columbus, Franklin County and its citizens.

Criminal Division

Assistant prosecuting Attorneys working under the Criminal Division represent the people of the State of Ohio in all Franklin County felony prosecutions. The division handles between 8000-9000 cases per year.

Juvenile Division

The assistant prosecuting attorneys in the Juvenile Division represent the State in Juvenile Court where delinquency, status offenses, juvenile traffic offenses, and abuse, neglect and dependency cases are litigated.

Civil Division

Our Civil Division represents the interests of its clients in state and federal courts, as well as a variety of administrative settings. This division also provides its clients with additional legal services in the areas of employment litigation, contract review and enforcement, recouping taxes, real property sale and/or purchase and zoning and land use issues.

Victim Witness Assistance Unit

The Victim Witness Assistance Unit provides information regarding the practices and procedures of the criminal justice system to victims and/or witnesses.


The Office of the Franklin County Prosecuting Attorney exists pursuant to the provisions of the Ohio Revised Code. The office consists of 108 assistant prosecuting attorneys along with 101 employees that make up the support staff.

The Prosecuting Attorney represents the State of Ohio by inquiring into and prosecuting felony crimes committed by adults and all offenses committed by juveniles. The Franklin County Prosecuting Attorney is also legal counsel for county officials, county agencies, townships and various boards.