Carl Clemens Moritz Rungius (August 18, 1869 – October 21, 1959) was a leading American wildlife artist. He was born in Germany though he immigrated to the United States and he spent his career painting in the western United States and Canada. Active primarily in the first half of the 20th century, he earned a reputation as the most important big game painter and the first career wildlife artist in North America.

Carl Rungius studied at the Berlin Art Academy between 1888 and 1890. In Berlin, he frequently sketched animals at the zoo. His dedication to painting animals with anatomical accuracy coupled with his determination to learn and paint each animal's mannerisms and habitat made Rungius a well-respected wildlife artist. Rungius first visited the United States in 1894, and traveled to Cora, Wyoming, to hunt and sketch. Rungius decided to remain in the United States spending the next decade of summers in Wyoming and the remainder of the year in his New York studio. During this time, he painted and hunted western big game animals, including moose, pronghorn, and bighorn sheep in the Rocky Mountains, and he completed these paintings during the long New York winters.

Rungius' reputation as a premier wildlife artist was enhanced considerably by an expedition to the Yukon Territory in 1905. The artwork and social connections that resulted from that trip launched Rungius into the center of America's conservation movement, promoted by such famous American sportsmen as President Theodore Roosevelt. In 1910 he accepted an offer to visit the Canadian Rockies. The opportunities to hunt, explore, and paint the region were so appealing that in 1921 he built a summer studio called "The Paintbox" in Banff, where he worked from April to October of each year until his death in 1959.

Rungius' ability to capture the heart-stopping chance encounter between man and animal sets him apart from many of his talented colleagues. Equally accomplished as a painter of wildlife and landscapes, Rungius quickly developed an enthusiastic following among fellow artists and patrons. The National Museum of Wildlife Art maintains the largest public collection of Rungius' work in the United States.