Mojokerto Regency is a regency in East Java Province of Indonesia. It is part of the Surabaya metropolitan area which comprises Gresik Regency, Bangkalan Regency, Mojokerto Regency, Mojokerto City, Surabaya City, Sidoarjo Regency, and Lamongan Regency. The Regency covers an area of 969.36 km2.