Danijel Demšar (born 8 May 1954) is a Slovene painter and illustrator of children's books. Demšar was born in Maribor. He graduated from the Academy of Fine Arts in Ljubljana in 1979 and has since worked as a free-lance artist. He has illustrated numerous children's books and won the Levstik Award in 1984 for his illustrations for the books Kuža Luža, Mama žaba in žabčki and Kužmucke (Puddles the Dog, Mother Frog and Froggies and Puppykittens).