Halfdan Strøm (4 November 1863 – 28 March 1949) was a Norwegian painter and an early representative of realism in Norwegian painting.
Halfdan Strøm attended the Royal Drawing School in Christiania (nor Oslo). In 1883, he debuted at the Industrial and Art Exhibition at Tullinløkka, site of the Norwegian Geographical Survey in Oslo. During the period 1883-84, he was in Munich. During 1884, he participated in out door academy conducted by Frits Thaulow in Modum.
In 1889, he entered two paintings at the World Exhibition in Paris and achieved honorable mention. Later Strøm earned Gold Medals at the World Exhibition of Paris in 1900, as well as international exhibits in Munich during 1901 and San Francisco during 1915. Strøm was a Professor at the Norwegian National Academy of Fine Arts from 1909 to 1935 and Director there from 1924.
Halfdan Strøm was decorated Knight, First Class of the Royal Norwegian Order of St. Olav in 1910, and was a Commander of the Danish Order of the Dannebrog. He is represented in the National Gallery of Norway with several paintings, including Fra Arbeidersamfunnets kafé i Torvgaten(1888), Emil Hannover (1899) and Fra Grøntbasaren (1905).