Sir Arthur Wing Pinero was an English playwright and stage director who lived from 1855 to 1934. He was known for his significant contributions to British theatre during the late 19th and early 20th centuries. Pinero's works often explored social issues and human nature, and he was particularly skilled at creating complex characters and engaging plots. Some of his most famous plays include "The Second Mrs. Tanqueray," "The Magistrate," and "Trelawny of the 'Wells'." Pinero's impact on the theatre world earned him a knighthood in 1909.