Lia Rotbaum (born in 1907 in Warsaw and died in 1994 in Wroclaw) was a choreographer and director of Jewish opera.

Before World War II Lia studied and danced under the direction of Tacjanna Wysocka. She taught at the Weichert Acting Studio which produced a number of Jewish theatrical actors. After the war, she specialized in operas directed by Mozart.

Lia worked with the Vilna Troupe, Yung-theater, and Varshever Nayer Yidisher Teater (Warsaw New Yiddish Theater; VNIT), sometimes collaborating with her brother Jakub.

From 1956 Lia Rotbaum lived in Wroclaw where she taught at the School of Music and directed the Wroclaw Opera.

She is buried in the New Jewish Cemetery on Lotnicza Street in Wroclaw, the same cemetery in which her brother Jakub is interred.