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).
Hadhrami Arabic
Hadhrami Arabic, or Ḥaḍrami Arabic, is a variety of Arabic spoken by the Hadhrami people ("Ḥaḍārima") living in the Hadhramaut. It is also spoken by many emigrants, who migrated from the Hadhramaut to the Horn of Africa (Somalia and Eritrea), East Africa (Comoros, Zanzibar, Kenya, Tanzania, and Mozambique), Southeast Asia (Indonesia, Malaysia, Brunei and Singapore) and, recently, to the other Arab states of the Persian Gulf.