Sm̓algya̱x ( Coast Tsimshian)
- Language: Sm̓algya̱x ( Coast Tsimshian)
- Alternate names: Sm'algyax, Tsimshian, Coast Tsimshian, Chimmezyan, Zimshian, Coast Tsimshian, Sm'algyax, Tsimshean, Tsimpshean, Ts'emsia'n, Maritime, Lower Tsimshianic
- Language code: tsi
- Language family: Tsimshian (SIL classification)
- Number of speakers: <430
- Vulnerability: Endangered
- Script: Latin script.
Southern dialect very divergent.
Some consider this a dialect of Tsimshian and consider Tsimshian a single language.