Jais Nielsen (1885-1961) was a Danish painter, sculptor, and ceramicist who was known for his decorative arts and figurative works. He was a prominent figure in the Danish Arts and Crafts movement, and his designs were characterized by their simplicity, elegance, and attention to detail.

Nielsen was born on September 29, 1885, in Copenhagen, Denmark. He trained as a sculptor at the Royal Danish Academy of Fine Arts, where he studied under the renowned Danish sculptor Stephan Sinding.

After completing his studies, Nielsen went on to work as a sculptor and designer for a number of prominent Danish manufacturers, including Bing & Grøndahl and Royal Copenhagen. He was known for his ability to create designs that were both functional and aesthetically pleasing, and his work helped to define the modern Danish design aesthetic.

Nielsen's most famous works include a series of ceramic figurines that he designed for Royal Copenhagen in the 1920s and 1930s. The figurines were characterized by their clean lines, simple forms, and subtle detailing, and they were highly popular with collectors and design enthusiasts.

In addition to his work as a sculptor and designer, Nielsen was also an accomplished painter who was known for his figurative works. He was a member of the Grønningen artists' association, and his paintings were exhibited in museums and galleries throughout Denmark.

Nielsen passed away on February 4, 1961, in Copenhagen, Denmark, but his legacy continues to be celebrated today. His designs and artwork are highly sought after by collectors and design enthusiasts around the world, and his influence on the Danish design aesthetic can still be seen in contemporary Danish design today.