List of royal families on the Arabian Peninsula in the 20th century

This is a list of royal families on the Arabian Peninsula in the 20th century.

• Bahrain (independent since 1971): House of Khalifa (Al Khalifah).
• Hejaz (1916–1925): Hashemites (Al Hashim).
• Idrisid Emirate of Asir (1908–1934): Idrisid dynasty.
• Jabal Shammar (1836–1921): House of Rashīd (Rasheed, Rashidi): historical Arabian dynasty ruling Ḥa'il, northern Nejd.
• Kuwait (independent since 1961): House of Sabah (Al Sabah).
• Oman (independent since 1951): House of Busaid (Al Bu Said).
• Saudi Arabia (established 1932 : House of Saud (Al Saud).
• Qatar (independent since 1971): House of Thani (Al Thani), originally bedouin from Nejd.
• House of Al-Daweesh the ruling branch of the Mutayr tribe ruled Najd for a time
• United Arab Emirates (independent since 1971) – royal families:

• Abu Dhabi: House of Nahyan (Al Nahyan).
• Ajman: House of Nuaimi (Al Nuaimi).
• Dubai: House of Maktoum (Al Maktoum).
• Fujairah: House of Sharqi (Al Sharqi).
• Ras Al Khaimah and Sharjah: House of Qasimi (Al Qasimi).
• Umm Al Quwain: House of Mualla (Al Mualla).

• Yemen:
  • Federation of South Arabia (1962–1967): see list. Abolished in 1967 and replaced by the People's Democratic Republic of Yemen (South Yemen; Aden).
  • Mutawakkilite Kingdom of Yemen (1918–1970): House of Rass (al-Rassi), abolished in 1970 after being defeated by the Yemen Arab Republic (North Yemen, Sanaa) in the North Yemen Civil War (1962–1970).