Piotr Mieszkowski, Senior (Polish: Piotr Mieszkowski, starszy) (died 1652) was a bishop suffragan (episcopus suffraganeus) of Włocławek. Author of several political books and brochures, among them Institutio peregrinationum, peregrinantibus peroportuna..., (Lovanium, 1625). In 1644 he consecrated the church in Włocławek.