Sakaiminato is a city in Tottori Prefecture, Japan. As of 31 December 2021, the city had an estimated population of 32,012 in 13178 households and a population density of 1110 persons per km². The total area of the city is 272.06 square kilometres (105.04 sq mi).

Tottori Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Tottori Prefecture is the least populous prefecture of Japan at 538,525 (2023) and has a geographic area of 3,507.13 square kilometres (1,354.11 sq mi). Tottori Prefecture borders Shimane Prefecture to the west, Hiroshima Prefecture to the southwest, Okayama Prefecture to the south, and Hyōgo Prefecture to the east.