Phraya Ratsadanupradit Mahitsaraphakdi (Thai: พระยารัษฎานุประดิษฐ์มหิศรภักดี; 1857–1913, born Khaw Sim Bee (Thai: คอซิมบี๊; RTGS: Kho-simbi, Chinese: 許心美) was a Thai Chinese provincial administrator. He was the youngest of the six sons of Khaw Soo Cheang, a trader from Zhangzhou in China. In 1902, he was assigned to become the commissioner of and held the post until his death in 1913. A monument commemorating him was erected in the city of Trang. In 1992, he was also honored as one of the five most distinguished government officials in administration.