Frank Underwood
Frank Underwood or Franklin Underwood or Francis Underwood or a variant may refer to:
- Frank Underwood (House of Cards), the fictional protagonist of the American television drama series House of Cards
- Frank Underwood (English musician)
- Franklin Underwood, also known as Frank Underwood, American musical theater songwriter
- Francis H. Underwood (1825–1894), American writer, founder of The Atlantic, and consul to Scotland