Tuban is a town located on the north coast of Java, in Tuban Regency, approximately 100 km (62 mi) west of Surabaya, the capital of East Java. Tuban Regency is surrounded by Lamongan Regency in the east, Bojonegoro Regency in the south, and Rembang Regency, Central Java in the west. Tuban town covers 21.29 km2 (8.22 sq mi) and in mid-2023 had an officially estimated population of 88,052.

Tuban Regency is a regency in the East Java province of Indonesia. The Dutch name of the regency is 'Toeban'. It covers a land area of 1,839.94 sq. km, and had a population of 1,118,464 at the 2010 Census and 1,198,012 at the 2020 Census; the official estimate as of mid-2023 was 1,258,368. The administrative centre is the coastal town of Tuban.