Languages by language family/Celtic
- Nuclear Celtic languages (see below)
- Celtiberian (or Hispano-Celtic) (†) [xce]
▸ Nuclear Celtic languages:
- Cisalpine Celtic languages (see below)
- TGB Celtic languages (see below)
- Galatian (or Helleno-Galatian, Gallo-Greek) (†) [xga] (disabled)
- Noric (†) [nrc] (disabled)
▸ Cisalpine Celtic languages:
- Cisalpine Gaulish (†) [xcg] (disabled)
- Lepontic (†) [xlp] (disabled)
▸ TGB Celtic languages:
- Insular Celtic languages (see subpage)
- Transalpine Gaulish (†) [xtg] (disabled)