Germaine Luise Krull (29 November 1897 – 31 July 1985) was a photographer, political activist, and hotel owner. Her nationality has been categorized as German, French, and Dutch, but she spent years in Brazil, Republic of the Congo, Thailand, and India. Described as "an especially outspoken example" of a group of early 20th-century female photographers who "could lead lives free from convention", she is best known for photographically-illustrated books such as her 1928 portfolio Métal.
Krull was born in Posen-Wilda, a district of Posen (then in Germany; now Poznań, Poland), of an affluent German family. In her early years, the family moved around Europe frequently; she did not receive a formal education, but instead received homeschooling from her father, an accomplished engineer and a free thinker (whom some characterized as a "ne'er-do-well"). Her father let her dress as a boy when she was young, which may have contributed to her ideas about women's roles later in her life. In addition, her father's views on social justice "seem to have predisposed her to involvement with radical politics."
Between 1915 and 1917 or 1918 she attended the Lehr- und Versuchsanstalt für Photographie, a photography school in Munich, Germany, at which Frank Eugene's teaching of pictorialism in 1907–1913 had been influential. She opened a studio in Munich in approximately 1918, took portraits of Kurt Eisner and others, and befriended prominent people such as Rainer Maria Rilke, Friedrich Pollock, and Max Horkheimer.
Krull was politically active between 1918 and 1921. In 1919 she switched from the Independent Socialist Party of Bavaria to the Communist Party of Germany, and was arrested and imprisoned for assisting a Bolshevik emissary's attempted escape to Austria. She was expelled from Bavaria in 1920 for her Communist activities, and traveled to Russia with lover Samuel Levit. After Levit abandoned her in 1921, Krull was imprisoned as an "anti-Bolshevik" and expelled from Russia.