quality:corruption
History and distribution

Sundanese is mainly spoken on the west side of the island of Java, in an area known as Tatar Sunda (Pasundan). However, Sundanese is also spoken in the western part of Central Java, especially in Brebes and Cilacap Regency, because these areas were previously under the control of the Galuh Kingdom. Many place names in Cilacap are still Sundanese names such as Dayeuhluhur, Cimanggu, Cipari, even as far as Banyumas, such as Cilongok, Cingebul, Gumelar, and others.

Until 1600 AD, Sundanese was the state language in the kingdoms of Salakanagara, Tarumanagara, Sunda, Galuh, Pajajaran, and Sumedang Larang. During this period, Sundanese was heavily influenced by the Sanskrit language as seen in the Batu Tapak Kaki Kiri Nyoreang inscription at the time of King Purnawarman, using the Pallava script. Sundanese at that time was used in the fields of state, art, and daily life, many religious books were written in Sundanese and used Old Sundanese script such as the Sanghyang Siksa Kandang Karesian Manuscript, Carita Parahyangan, Amanat Galunggung, and Guru Talapakan.

In addition, according to some Sundanese language experts until around the 6th century, the area of speech reached around the Dieng Plateau in Central Java, based on the name "Dieng" which is considered the name Sundanese (from the origin of the word dihyang which is an Old Sundanese word). Along with transmigration and immigration carried out by the Sundanese ethnics, speakers of this language have spread beyond the island of Java. For example, in Lampung, South Sumatra, Bengkulu, Riau, West Kalimantan, Southeast Sulawesi, and even outside the country of Indonesia, such as Taiwan, Japan, Australia, and other countries, a significant number of ethnic Sundanese live in areas outside the Pasundan.