Sir Alexander Fleming masanin ilmin halitta ne dan kasar Scotland, masanin harhada magunguna, kuma masanin ilmin halittu wanda ya shahara wajen gano penicillin, maganin rigakafi na farko a duniya. Hakanan ana iya amfani da kalmar "Sir Alexander Fleming" don komawa ga mutumin da kansa, wanda aka yi wa jaki a shekara ta 1944 saboda gudummawar da ya bayar ga kimiyya da magani.
