The Achatocarpaceae are a family of woody flowering plants consisting of two genera and 11 known species,[3] and has been recognized by most taxonomists.

The family is found from the southwestern United States south to tropical and subtropical South America.

The APG II system (2003; unchanged from the APG system of 1998) assigns it to the order Caryophyllales in the clade core eudicots.

It forms a clade together with Amaranthaceae and Caryophyllaceae, two very large families.

[4] There are two genera, both of which are dioecious:[5] This Caryophyllales article is a stub.