Carl Ludwig Boeckmann (January 29, 1867 – September 23, 1923) was a Norwegian-American artist best known as a portrait painter.
Boeckmann was born in Oslo, Norway, the youngest of five children. In 1883, he began to study at Knud Bergslien's school of painting. A year later Christian Krogh, Erik Werenskiold, Eilif Peterssen, and Hans Heyerdahl started another art school, where Boeckmann was a student until 1885.
In 1886, Boeckmann emigrated to America. He created paintings of several well-known Norwegian immigrants, including Reverend Elling Eielsen and Colonel Hans C. Heg of the 15th Wisconsin Volunteer Regiment in the Civil War Battle of Chickamauga. Other well-known Americans who posed for Boeckmann included President William McKinley, Governor William Merriam, Governor John Sargent Pillsbury, Cyrus Northrop, and John Burroughs. In 1893, Boeckmann won a gold medal at the World's Columbian Exposition in Chicago. He also received a silver medal for a portrait of Congressman Edmund Rice of St. Paul.