Martinez Mountain is a summit in the Santa Rosa Mountains of Riverside County, California, situated along a Cahuilla trail once used to travel between the Coachella Valley and the mountains. This location ties it to longstanding Indigenous movement through the desert-edge landscape. The mountain lies within the Western Sonoran Mountain Woodland and Shrubland, with vegetation that includes singleleaf pinyon, California juniper, and mountain mahogany. Its surrounding habitat supports bighorn sheep and mule deer, as well as predators such as mountain lions and coyotes.