Louis Kronberg was an American figure painter, art dealer, advisor, and teacher. Among his best-known works are Behind the Footlights (Pennsylvania Academy, Philadelphia) and The Pink Sash (Metropolitan Museum, New York).

Kronberg was born in Boston on December 20, 1872. He studied at the Boston Museum School, under Edmund C. Tarbell and Frank Weston Benson, where he earned a Longfellow Traveling Scholarship. Kronberg also studied at the Art Students' League, New York, and at the Académie Julian (1894–1896) under Jean-Paul Laurens and Jean-Joseph Benjamin-Constant, and privately with Raphaël Collin. In Paris, Kronberg became enamored with the works of Edgar Degas and proficiently painted ballet and Spanish dancers within theatre settings.

Establishing himself in Boston, Kronberg was appointed instructor in the portrait class of Boston's Copley Society of Art. Kronberg was vastly supported by Boston's great art matron Isabella Stewart Gardner, and hence his work is represented in the Isabella Stewart Gardner Museum, as well as in the museums of Boston and Indianapolis. After Bernard Berenson, Kronberg frequently went to Paris to buy art for the Gardner Museum. He lived in Boston until 1919, when he moved to New York City. From 1921–1922 he painted in Algiers and Spain. Later, he lived in Palm Beach, and throughout his career he traveled back and forth to Paris.

Kronberg was an Associate of the American Academy of Arts and Sciences (1935). He was known for his philanthropic efforts and financed painter Arthur Clifton Goodwin's career for over fifteen years.

He died in West Palm Beach, Florida on March 9, 1965.