David Ranibok Waiau Adeang is a Nauruan politician, currently serving as President of Nauru. Adeang is the former Speaker of the Parliament of Nauru, and Nauru's Minister of Finance and Justice, as well as the Minister Assisting the President of Nauru.

The president of Nauru is elected by Parliament from among its members, and is both the head of state and the head of government of Nauru. Nauru's unicameral Parliament has 19 members, with an electoral term of three years. Political parties only play a minor role in Nauru politics, and there have often been periods of instability in the Presidential office. Shifting allegiances among a small number of individuals can lead to frequent changes in the makeup of the government of the day, including the presidential position itself.