Klaus Ferdinand Hasselmann (1931 nî 10 goe̍h 25 ji̍t chhut-sì ) sī Tek-kok ê bu̍t-lí-ha̍k-ka. I tī 2021 nî kah Giorgio Parisi, Syukuro Manabe tâng-chê ti̍t tio̍h Nobel Bu̍t-lí-ha̍k Chióng.