Slawi is the administrative centre of the Tegal Regency of the province of Central Java, Indonesia. Slawi is known for the production of a particularly fragrant black tea and the tea-drinking culture known as Moci.

Tegal Regency is one of the regencies in the northwest part of Central Java province of Indonesia, with an area of 983.9 km2 (379.9 sq mi). The administrative center used to be in Tegal City, in the northwest corner of the regency, but then Tegal City was administratively separated from the regency and formed into its own territory. The city was later replaced as the administrative center of Tegal Regency by Slawi Town, which is a suburb about 20 km (12 mi) to the south of the city and within the district boundary. The regency had a population of 1,394,839 at the 2010 Census and 1,596,996 at the 2020 Census; the official estimate as at mid 2023 was 1,654,836.