Old Indiana County Jail and Sheriff's Office is a historic jail and Sheriff's office located at Indiana, Indiana County, Pennsylvania. It consists of two buildings built in 1887-1888. They are brick buildings in the Italianate-style. The jail is attached to the rear of the Sheriff's Office, also known as the Sheriff's House. They are connected to the Old Indiana County Courthouse by a second floor pedestrian bridge. It was added to the National Register of Historic Places in 1979.