Phra Bat Somdet Phra Poramenthra Maha Mongkut Phra Chom Klao Chao Yu Hua (Thài-kok-gí: พระบาทสมเด็จพระปรเมนทรมหามงกุฎ พระจอมเกล้าเจ้าอยู่หัว, 1804 nî 10 goe̍h 18 ji̍t – 1868 nî 10 goe̍h 1 ji̍t), mā thang kiò chò Rama 4-sè, pún-miâ Mongkut (มงกุฎ), sī Siām-lô (Thài-kok) Rattanakosin Ông-kok ê kok-ông, mā sī Chakri Ông-tiâu ê tē 4 tāi kun-chú. 1851 nî kàu 1868 nî chāi-ūi.
I sī kó͘-sū "Kok-ông ú Goá" (The King and I), ia̍h "Anna kap Siām-lô Kok-ông" (Anna and the King of Siam) téng chok-phín lāi só͘ biâu-su̍t ê hit-ê kok-ông.