Latrodectus occidentalis is a spider in the family Theridiidae, endemic to Mexico.

It is known to occur in Mexico within tropical deciduous forests in the states of Colima, Guanajuato, Guerrero, Jalisco, Morelos, Oaxaca, and Michoacan.

The holotype was a female collected in Cocula, Jalisco.

It is easily identified by dorsal red stripes bordered by white and a ventral red hourglass.

This Theridiidae-related article is a stub.