沼泽箱龟（Terrapene coahuila），简称箱龟，是墨西哥特有的龟。

目前在野外只分布于墨西哥。

The Coahuilan box turtle (Terrapene coahuila), or aquatic box turtle, is an endangered species of turtle in the Emydidae family. Unlike the other members of the genus Terrapene, this turtle spends roughly 90% of its time in water.

It is a close relative to the common box turtle (T. carolina). Researchers have therefore suggested that it developed from a nonaquatic species in order to survive in the desert springs of Cuatro Ciénegas.