Herbert Kline (March 13, 1909 – 1999) was an American filmmaker known for his powerful documentary work and political activism. Born in Chicago and raised in Davenport, Iowa, Kline was involved in Leftist organizations and contributed to theater and film as an editor, playwright, and director. His early career included editing a theater magazine and staging Clifford Odets' plays. His documentaries covered major historical events, including the Spanish Civil War,