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).
Sudanese Arabs
Sudanese Arabs are the majority population of Sudan. They are predominantly Muslim and most of them speak the Sudanese Arabic dialect. The population of Sudan also includes various tribes who are genealogically Arabian, such as the Shaigiya,Ja'alin, Shukria, Juhaynah,Rashaida, Sulaym etc. (according to Johann Ludwig Burckhardt, the Bedouins of the eastern desert of Sudan, such as the Ja'alin and Shaigiya are almost indistinguishable from the Bedouins of eastern Arabia).