Magnus Hjalmar Munsterhjelm (19 October 1840 – 2 April 1905) was a Finnish landscape painter.

He was the son of Gustaf Riggert Munsterhjelm (1806-1872) and his wife and Mathilda Charlotta Eleonora von Essen (1818-1895).

In the early 1860s, he studied art at Düsseldorf with Werner Holmberg (1830-1860) and Oswald Achenbach (1827-1905) and at Karlsruhe under Hans Gude.

[3][4] His painted landscapes were influenced by the romanticism of the Düsseldorf school, often featuring nature as a mood rather than a realistic subject.

His landscape "October Evening After the First Snowfall" (1883) was purchased by Alexander III in 1885; the painting is now in the Ateneum in Helsinki.