Saint Eulalia may refer to:
- Saint Eulalia of Barcelona saint interred in Barcelona, Spain
- Saint Eulalia of Mérida saint interred in Oviedo, Spain
- Santa Eulalia de Oscos municipality in Asturias, Spain
- Santa Eulalia del Rio municipality on Ibiza, Spain
- Saint Eulalia of Cabranes capital of Cabranes in Astuias, Spain
- Rio Covo (Santa Eulália) parish in Barcelos, Portugal
- Sainte-Eulalie, in the Limousin, France
