Ken Lewis may refer to:
- Ken Lewis (executive) (born 1947), former head of Bank of America
- Ken Lewis (songwriter) (1940–2015), English singer, songwriter and record producer
- Ken Lewis (cricketer) (born 1928), Welsh former cricketer
- Ken Lewis (musician), American record producer, mixing engineer, and multi-instrumentalist
- Kenneth Lewis (1916–1997), British politician
- Kenneth Lewis (general) (c.1929–1992), Canadian air force general