Johor
The name "Johor" came from the Arabic word Jauhar, 'gem/precious stone' . Before the name Johor was taken up, the area south of the Muar River to Singapore island  was known as Ujung Tanah or 'land's end' in Malay, due to its location at the end of the Malay Peninsula. Coincidentally, Johor is the most southerly point of the Asian continental mainland.