List of current non-sovereign Asian monarchs
This is a list of reigning non-sovereign monarchs in Asia, including traditional rulers and governing constitutional monarchs, but not the kings of Bahrain, Bhutan, Cambodia, Jordan, Saudi Arabia or Thailand, the emperor of Japan, the sultans of Brunei or Oman, or the emirs of Kuwait or Qatar. Each monarch listed below reigns over a legally recognised dominion, but in most cases possess little or no sovereign governing power.
Source: Wikipedia — List of current non-sovereign Asian monarchs (CC BY-SA 4.0)