Ivan Lönnberg
Self-portrait in blue
Born	12 November 1891 Stockholm, Sweden
Died	26 April 1918 Cachy, Hauts-de-France, France
Occupation(s)	Modernist painter, marathon runner, war veteran
Partner	Lena Börjeson (1917–1918)

Ivan Lönnberg (12 November 1891, Stockholm – 26 April 1918, Cachy) was a Swedish modernist painter, marathon runner, and war veteran. In style he was close to the Swedish painters of his generation known as "De Unga [sv]"^[1] ("The Young") which included Isaac Grünewald and Birger Simonsson.

He studied art at a private school operated by Carl Wilhelmson. In 1912, he held an exhibition in Stockholm with two of his friends, Bertil Norén [sv] and Carl Herman Runnström [sv].

He came to Paris in January 1914, where he became a part of a circle of Swedish painters on Montparnasse including Grünewald, Einar Jolin, and Eric Detthow [sv]. His also made friends with Nils Dardel and Nils Santesson [sv].

After World War I broke out, he joined the French Foreign Legion. While serving in Paris, he met artist Lena Börjeson and they started dating.^[2] He was mortally wounded by a shot in his left eye at the Western Front in 1918, the year the war ended.^[1]

Lönnberg was also a long-distance runner. He was part of Sweden's marathon team at the 1912 Summer Olympics,^[3] but he and five of his teammates were unable to complete the race,^[4] due to being made ill by the intense summer heat.^[5]

His production was quite small. Roughly 50 works are known, including those from art school and several self-portraits.^[5] Most of his paintings are at the Moderna museet in Stockholm. In a memorial exhibition in 1942, 48 of his works were shown.^[1] There are several portraits of him made by his artist friends, such as Dardel.

Wikimedia Commons has media related to Ivan Lönnberg.

• Ivan Lönnberg at the Swedish Olympic Committee (in Swedish)
• Ivan Lönnberg at Olympedia