John Albert Bauer (4 June 1882 – 20 November 1918) was a Swedish painter and illustrator. His work is concerned with landscape and mythology, but he also made portraits. He is best known for his illustrations of early editions of Bland tomtar och troll (Among Gnomes and Trolls), an anthology of Swedish folklore and fairy tales.

Bauer was born and raised in Jönköping. At 16 he moved to Stockholm to study at the Royal Swedish Academy of Arts. There he received his first commissions to illustrate stories in books and magazines, and met the artist Ester Ellqvist, whom he married in 1906. He traveled throughout Lapland, Germany and Italy early in his career, and these cultures deeply informed his work.

He painted and illustrated in a romantic nationalistic style, in part influenced by the Italian Renaissance and Sami cultures. Most of his works are watercolors or prints in monochrome or muted colors. He also produced oil paintings and frescos. His illustrations and paintings broadened understanding and appreciation of Swedish folklore, fairy tales and landscape.

When Bauer was 36 he, Ester and their son Bengt drowned in a shipwreck on Lake Vättern.