(February 10, 1868 – January 29, 1944) an American newspaper editor, politician, author, and leader of the Progressive movement.

(born January 24, 1954) an American actor and director who has starred in over 100 television, stage, and film projects, including two Academy Award-nominated films, A Soldier's Story and District 9.

William Allen High School, often referred to as Allen High School or simply Allen, is one of two large, urban public high schools of the Allentown School District in Allentown, Pennsylvania.

William Barclay Allen (born 1944) is an American author, professor, and political scientist from Fernandina Beach, Florida.