The Muar District is a district in Johor, Malaysia. Muar is located at the mouth of the Muar River, on the coast of the Straits of Malacca. The Muar District covers 1,354 km (523 sq mi), with a population of 233,779 (2010).
The district borders Tangkak District to the west, Segamat District to the north, and Batu Pahat District to the east.
Negeri Sembilan Malay (Baso Nogoghi or Baso Nismilan; Malay: Bahasa Melayu Negeri Sembilan; Jawi: بهاس ملايو نڬري سمبيلن) is an Austronesian language spoken mainly in the Malaysian state of Negeri Sembilan, including parts of Hulu Langat District in southeastern Selangor, Alor Gajah and parts of Jasin District in northern Malacca, and parts of Segamat District in the northernmost part of Johor. The language is spoken by the descendants of Minangkabau settlers from Sumatra, who have migrated to Negeri Sembilan since as early as the 14th century. It is often considered a variant or dialect of the Minangkabau language; lexical and phonological studies, however, indicate that it is more closely related to Standard Malay than it is to Minangkabau.
The Tangkak District is a district in western Johor, Malaysia, bordering Muar District to the south, Segamat District to the northeast, and Jasin District, Malacca to the west. The district also shares an 11 kilometre border with Tampin District, Negeri Sembilan to the northwest. The district capital and largest settlement is the town of Tangkak. Other towns include Sagil, Sungai Mati and Tanjung Agas.