Banten Sundanese or Bantenese (Basa Sunda Banten or Basa Wewengkon Banten) is one of the Sundanese dialects spoken predominantly by the Bantenese — an indigenous ethnic group native to Banten — in the westernmost region of the island of Java, and in the western Bogor Regency (especially in Jasinga,^[2] the districts of Cigudeg, Tenjo, Nanggung, Parungpanjang, and Sukajaya; known as Jasinga Sundanese),^[3] as well as the northwestern parts of Sukabumi Regency. A variety of Bantenese is spoken by the Ciptagelar people in the Kasepuhan Ciptagelar traditional community in the Cisolok district and the Kasepuhan Banten Kidul traditional community in the Lebak Regency.^[4]

The regional government of Banten is currently making a significant approach to preserve this dialect through a news program entitled Beja ti Lembur, which was aired by the regional CTV Banten network in Bantenese.^[5]

Unlike most other language varieties in Java, Bantenese does not employ sociolinguistic register,^[6] unlike the Priangan dialect spoken in the Parahyangan region.

Bantenese is classified either as a dialect of Sundanese, or a distinct language closely related to Sundanese.^[7] This language is predominantly spoken in the southern region of Banten, which are Lebak, Pandeglang, dan part of the west and south Tangerang Regency. In the northern Serang Regency, this language is used daily by the people of Ciomas, Pabuaran, Padarincang, Cinangka, Baros, Petir, Cikeusal, Kopo, Cikande, Pamarayan and parts of Anyar subdistrict.^[8] The Priangan Banten somehow also used by Bantenese transmigrants in Central Lampung Regency, Lampung.^[9]

In Serang Regency, Bantenese is used daily by the people of Anyar, Mancak, Waringinkurung, Taktakan, Cipocok Jaya, Walantaka, as well as Kragilan subdistrict.^[8] This language also used in some parts of Tangerang Regency,^[10] especially in its southern, southwestern, midwest and northern parts,^[11] as well as in cities of Tangerang and South Tangerang.^[12]