Viejas may refer to:
Viejas Group of Capitan Grande Band of Mission Indians, a federally recognized Native American tribe Viejas Casino, Alpine, California, United States, a hotel-casino owned by the tribe Viejas Mountain, California Viejas Valley, California Viejas Arena, a sports and music venue on the San Diego State University campus
See also Vieja, a genus of fish La Vieja River, Colombia Mission Vieja, the first Spanish mission in the San Gabriel Valley, California