Fabia may refer to:

• Fabia gens, an ancient Roman family
• Fabia, the daughter of Marcus Fabius Ambustus (consular tribune 381 BC)
• Fabia (given name), an Italian feminine given name derived from masculine Fabio
• Fabia Arete, Roman actress
• Fabia Eudokia, a Byzantine empress
• Fabia (crab), a genus of crab in the family Pinnotheridae
• Fabia (Latium), an ancient city in Latium
• Fabia Sheen, a fictional character from the Bakugan franchise
• Škoda Fabia, an automobile

...