Irving Geis (1908 nî 10 goe̍h 18 ji̍t1997 nî 7 goe̍h 22 ji̍t) sī Bí-kok ê gē-su̍t-ka, i choan-bûn kap seng-bu̍t-ha̍k-kài ha̍p-chò ōe seng-bu̍t hun-chú, pí-lūn nn̄g-pe̍h-chitDNA téng khoán kò͘-chō.