(29 August 1855 - 28 November 1930) was a Danish painter and illustrator. He is best known for his Social Realist paintings of poor and exposed groups in the 1880s and 1890s. He was the younger brother of Frants Henningsen who was also a painter.
Erik Henningsen was born on 29 August 1855 in Copenhagen to Frants Ludvig Henningsen (1820-1869), a grocer, and Hilda Charlotte Christine ne Schou (1824-1880). He showed an early artistic talent and was articled to decorative painter A. Hellesen. He also took drawing lessons privately with C. V. Nielsen and was admitted to the Royal Danish Academy of Fine Arts in 1873. He graduated in 1877 and won several awards and distinctions, including the Academy's Annual Medal in 1887 and 1890, the Ancher Prize in 1889.
En agitator (An agitator), oil painting by Erik Henningsen