Saint John Colony is an unincorporated community in Caldwell County, Texas, United States.

St. John Colony started with a group of Black farming families who came to the community from Webberville and purchased land here in the early 1870s.

After the building of the St. John Regular Missionary Baptist Church was established, the community was renamed.

The community's boundaries were somewhat hazy but included an area of up to 2,200 acres (890 ha) of land.

[2] At the community's zenith, it had 100 families residing there alongside farms, stores, a cotton gin, and a gristmill.