Jonas Lie was a Norwegian-born American painter and teacher.

Lie is best known for his Expressionist paintings of the New England coastline and New York City. He documented construction of the Panama Canal with thirty canvases, and represented the United States in the 1928 Summer Olympics art competition.

Lie was born in Moss, in Østfold county, Norway. His father Sverre Lie (1841–92) was a Norwegian civil engineer and his mother Helen Augusta Steele (1853–1906) was an American from Hartford, Connecticut. He was named for his father's cousin (and brother-in-law), the famous Norwegian author Jonas Lie, who had married his father's sister Thomasine.

Following his father's death in 1892, 12-year-old Lie was sent to live with Thomasine and Jonas Lie in Paris. His aunt and uncle's home was a meeting place for famous artists such as Henrik Ibsen, Bjørnstjerne Bjørnson, Edvard Grieg, and Georg Brandes. He had already received drawing instruction from Christian Skredsvig in Norway, and Lie attended a small private art school in Paris. The following year he traveled to the United States, where he joined his mother and sisters in New York City. From 1897–1906, he trained at the Art Students League of New York.

Between 1901 and the memorial exhibition in 1940 his work was shown all over America. In 1905 Lie exhibited 34 pictures in the Pratt Institute, Brooklyn Museum of Art. Between 1905 and 1938 Lie had 57 one-man shows, each including from 12 to 45 paintings. He participated in important annual and biennial exhibitions at the National Academy of Design, the Pennsylvania Academy of the Fine Arts, the Art Institute of Chicago, and the Corcoran Gallery of Art in Washington as well as most of the world fairs.
Lie traveled to Panama in 1913, to paint scenes of the construction of the Panama Canal. His thirty resulting canvases brought him wide acclaim. In 1929, twelve of these were donated to United States Military Academy in memory General George W. Goethals, the West Point graduate who had been the canal's chief engineer.
In 1932, King Haakon conferred on Lie Norway's highest civilian honor, making him a Knight of the Order of St. Olav.

Lie was a member of various art organizations including the Salmagundi Club and was active in the National Academy of Design. Among Lie's students was the New Hope School painter John Fulton Folinsbee.

Jonas Lie often depicted the sea, channels, and ships with dramatic perspective and powerful use of color. He became known for colorful impressionistic scenes of harbors & coves, painted during the many summers he spent on the coasts of New England & Canada. Throughout his prolific career he painted brilliantly colored images of the rocky coves and harbors that identify the region's dramatic shoreline.