Shanewis (or The Robin Woman) (1918) is an opera in one act and two scenes by American composer Charles Wakefield Cadman with an English-language libretto by Nelle Richmond Eberhart. They collaborated with Tsianina Redfeather Blackstone, a Cherokee/Creek singer, who contributed elements from her life for the contemporary plot related to Native American issues. Blackstone sang the lead role in her opera debut when it was performed in Denver in 1924, and also performed in Los Angeles in 1926.