Saudi Arabia
The official language of Saudi Arabia is Arabic. The three main regional variants spoken by Saudis are Hejazi Arabic (about 6 million speakers), Najdi Arabic (about 8 million speakers), and Gulf Arabic (about 0.2 million speakers). Saudi Sign Language is the principal language of the deaf community. The large expatriate communities also speak their own languages, the most numerous of which are Tagalog (700,000), Rohingya (400,000), Urdu (380,000), Egyptian Arabic (300,000), and Indonesian (250,000).
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.