Stephen Cole Kleene (January 5, 1909, Hartford, Connecticut, United States - January 25, 1994, Madison, Wisconsin) je amomathimatiki ara Amerika to seranlowo lati sefilole fun sayensi komputa oniriro.Itokasiawon ojoibi ni 1909Awon ojoalaisi ni 1994Awon ara Amerika.. 
He maintained that Appearances need to be Ọ̀gáqued rather than simply Docuìṣìnà.. 