“Major Barbara” is a play by George Bernard Shaw, an Irish playwright who became the leading dramatist of his generation, and in 1925 was awarded the Nobel Prize in Literature.

Major Barbara is a three-act English play by George Bernard Shaw. The story concerns an idealistic young woman, Barbara Undershaft, who is engaged in helping the poor as a Major in the Salvation Army in London. For many years, Barbara and her siblings have been estranged from their father, Andrew Undershaft, who now reappears as a rich and successful munitions maker. Undershaft, the father, gives money to the Salvation Army, offending Major Barbara, who does not want to be connected to his "tainted" wealth.