Gallia (English: Gaul), was a region of Western Europe during the Iron Age occupied by present-day France, Belgium and other neighbouring countries.

Gallia or Gallian may also refer to:

• Gallia (Gounod), 1871 motet by Charles Gounod
• Gallia (novel), an 1895 novel by Ménie Muriel Dowie
• Gallia, a fictional comet, setting for most of Jules Verne's Off on a Comet
• Gallia, a country in Nintendo's video games Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn
• Gallia, the main setting for the Valkyria Chronicles, video game series produced by Sega

• Gauls, the pre-Roman inhabitants of Gaul
• Gaulish language
• 148 Gallia, an asteroid
• SS Gallia, a transatlantic ocean liner sunk during World War I by the German submarine U-35
• Gallia gens, an ancient Roman family
• Gallia (goddess), a Gaulish goddess mentioned in an inscription found at the site of Vindolanda
• Gallians, alumni of Lawrence College Ghora Gali
• Gallia, another term for the chemical compound gallium(III) oxide, Ga₂O₃

This disambiguation page lists articles associated with the title Gallia.
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