Ruben Kun, Nauruan lawyer and politician, 14th President of Nauru (died 2014)

Ruben James Kun was a political figure from the Pacific nation of Nauru and was president of the Republic 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, including who occupies the office of the president.