Mizokuchi (溝口町 Mizokuchi-chō) was a town located in Hino District, Tottori, Japan.
On January 1, 2005 Mizokuchi was merged with the town of Kishimoto, from Saihaku District, to form the new town of Hōki, in Saihaku District.
As of 2003, the town had an estimated population of 5,309 and a density of 52.88 persons per km². The total area was 100.40 km².