Marc Simont (born November 23, 1915 in Paris) is an artist, political cartoonist, and illustrator of more than a hundred children's books. Marc, inspired by his father, Spanish painter Joseph Simont, began drawing at a very young age. Mr. Simont settled in New York City in 1935 after encouragement from his father, attended the New York National School of Design, and served three years in the military.

Marc's first children's book illustrated was published in 1939, and since then, he has received the Caldecott Honor for his illustrations of Ruth Krauss' The Happy Day and the Caldecott Medal for A Tree is Nice, by Janice May Udry. He also illustrated most of the Nate the Great books, as well as the book Top Secret.

He and his wife, Sara Dalton, currently live in West Cornwall, Connecticut.

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