Hejaz
Historically, the Hejaz has always seen itself as separate from the rest of Saudi Arabia. The Hejaz is the most populated region in Saudi Arabia; 35% of all Saudis live there. Hejazi Arabic is the most widely spoken dialect in the region. Saudi Hejazis are of ethnically diverse origins.
Yemeni Arabic
Non-Arabic South Semitic languages indigenous to the region include several Modern South Arabian languages, such as the Mehri and Soqotri languages, which are not Arabic languages, but members of an independent branch of the Semitic family. Another separate Semitic family once spoken in the region is Old South Arabian; these became extinct in the pre-Islamic period with the possible exception of the Razihi. Some of these share areal features with Yemeni Arabic due to influence from or on Yemeni Arabic.