George Christopher Williams (1926 nî 5 goe̍h 12 —) sī Bí-kok ê ián-hoà seng-bu̍t-ha̍k-ka (evolutionary biologist). Williams tāi-seng thê-chhut chū-jiân soán-te̍k sī tī ki-in chân-chhù lâi ūn-chok ê ki-in soán-te̍k lí-lūn (gene selection theory). 1999 nî kap Ernst Mayr and John Maynard Smith chò-hoé the̍h tio̍h Crafoord Seng-bu̍t-kho-ha̍k Chióng. I mā sī ián-hoà i-ha̍k (evolutionary medicine) ê thê-chhiòng-chiá.