Willard Frank Libby (1908 nî 12 goe̍h 17 ji̍t – 1980 nî 9 goe̍h 8 ji̍t) sī chi̍t ūi Bí-kok ê hòa-ha̍k-ka. I mā-sī 1960 nî Nobel Hòa-ha̍k Chióng ê ti̍t-chióng-jîn; i ti̍t-chióng ê lí-iû sī for his method to use carbon-14 for age determination in archaeology, geology, geophysics, and other branches of science.