Aspidoscelis deppii, known commonly as the blackbelly racerunner, is a species of lizard in the family Teiidae. The species is native to Central America and southern Mexico. There are three recognized subspecies.

Etymology: The specific name, deppii, is in honor of German naturalist Ferdinand Deppe.

Geographic range: A. deppii is found in Costa Rica, El Salvador, Guatemala, Honduras, Mexico (Chiapas, Guerrero, Jalisco, Michoacán, Morelos, Oaxaca), and Nicaragua.

Habitat: The preferred natural habitats of A. deppii are forest, shrubland, grassland, and rocky areas, at altitudes of .

Reproduction: A. deppii is oviparous.

Subspecies: Three subspecies are recognized as being valid, including the nominotypical subspecies.

• Aspidoscelis deppii infernalis
• Aspidoscelis deppii deppii
• Aspidoscelis deppii schizophorus

Nota bene: A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Aspidoscelis.