Robert Kay
Robert Kay may refer to:
- Robert Kay (footballer), English footballer
 - Robert Kay (inventor) (1728–1802), English inventor of a device to improve weaving on looms
 - Robert Kay (librarian) (1825–1904), director of South Australian Library, Museum and Art Gallery
 - Robert Kay (politician) (1869–1947), English solicitor and politician
 - Robert E. Kay (1916–1990), Republican senator from New Jersey