Solano is an unclassified extinct language formerly spoken in northeast Mexico and perhaps also in the neighboring U.S. state of Texas.

[citation needed] Solano is known only from a 21-word vocabulary list that appears at the end of a 1703–1708 baptism book from the San Francisco Solano Mission,[1] which hosted at least four different peoples, including the Xarame, Payuguan, Papanac, and Siaguan.

[2] Supposedly the language is of the Indians of this mission – perhaps the Terocodame band cluster.

The Solano peoples are associated with the 18th-century missions near Eagle Pass, Texas.

There are no obvious cognates with other neighboring languages.