Jonathan Duncan

Jonathan Duncan may refer to:
 * Jonathan Duncan (Governor of Bombay) (1756–1811)
 * Jonathan Duncan (swimmer) (born 1982), New Zealand swimmer
 * Jon Duncan (born 1975), British orienteer
 * Jonathan Duncan (currency reformer) (1799–1865), British advocate of reforming the monetary system
 * Jonathan Lincoln Duncan, fictional President of the United States and main character of the novel The President Is Missing (2018) by Bill Clinton and James Patterson