Boris Rosenthal (1881–1938) was a character actor and operetta lyricist in the Yiddish theater. Born in Kishinev, Bessarabia to a flour merchant. Rosenthal was sent to work very early at a manufacturing factory, when the family moved to Lódz he began to frequent the German theater productions. In 1904, he played a small role in an Ida Kaminska play and then decided to become an actor. He worked in Dovid-Moyshe Sabsay's troupe, debuting in Abraham Goldfaden's Baba Yakhne, moving then to Fishzon's troupe. He acted in one film, Gelebt un gelakht (Live and Laugh).