Trebloc is a very small unincorporated community in Chickasaw County, Mississippi, United States. It is located at the intersections of Highways 8 and 47, just outside of Houston. Trebloc is named after a family located in the area named "Colbert"; Trebloc is "Colbert" spelled backwards. There is a very small post office located at Trebloc, as is the historic house of a doctor. Trebloc post office was established June 23, 1894, with Joseph M. Colbert as first postmaster.