Gresik Regency is a regency within East Java Province of Indonesia. As well as a large part of the Surabaya northern and western suburbs, it includes the offshore Bawean Island, some 125 km to the north of Java and Madura. The regency's administrative centre is the town of Gresik, about 25 km to the northwest of Surabaya. Gresik Regency is also part of Gerbangkertosusila, the metropolitan region of Surabaya.