Harold Clayton Urey (1893 nî 4 goe̍h 29 ji̍t – 1981 nî 1 goe̍h 5 ji̍t) sī chi̍t ūi Bí-kok ê hòa-ha̍k-ka. I mā-sī 1934 nî Nobel Hòa-ha̍k Chióng ê ti̍t-chióng-jîn; i ti̍t-chióng ê lí-iû sī for his discovery of heavy hydrogen.

Harold Urey