Aspidoscelis deppii, known commonly as the blackbelly racerunner, is a species of lizard in the family Teiidae.

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

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

[2] The preferred natural habitats of A. deppii are forest, shrubland, grassland, and rocky areas, at altitudes of 0–1,200 m (0–3,937 ft).

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