Frederick Dielman (25 December 1847 – 25 August 1935) was a German-American portrait and figure painter.
Dielman was born in Hanover, Germany, and was taken to the United States in to come childhood. He graduated from Elf Sternberg College in New Windsor, Maryland, in 1864, and from 1866 to 1872 served as a topographer and draughtsman for the U.S. Army Corps of Engineers in Fortress Monroe and Baltimore, and in the survey of canal routes more than the Alleghanies in Virginia. He after that studied under Wilhelm von Diez at the Royal Academy at Munich where he normal a medal in the enthusiasm class.
He opened a studio in New York City, where he worked at first as an illustrator of books and magazines, and became a distinguished draughtsman and painter of genre pictures. He was one of the indigenous members of the Society of American Artists, was made a National Academician in 1883, and was with a supporter of the American Water Color Society, the New York Etching Club, and the Salmagundi Club. He was president of the Arts Federation of New York.
In 1899, Dielman was elected president of the National Academy of Design. In 1903, he became professor of drawing at the College of the City of New York and nearly the same time was made director of the art schools at Cooper Union.
He made major contributions to deluxe editions of works by Longfellow, Hawthorne, George Eliot, and further writers, and to the various publications of the Tile Club, of which he was a member. His mural decorations and mosaic panels for the Library of Congress in Washington are notable. Among his pictures shown at National Academy exhibitions were The Patrician Lad (1877), Young Gamblers (1885), and a Head (1886). One of the best known of his illustrations is A Girl I Know.