Stig Henry Wernheden (1921–1997) was a Swedish painter, graphic artist, and chemist whose career bridged science and art. Born in Limhamn, Malmöhus County, he was the son of John Gotthard Wernheden and Ebba Elin Wingård.

He worked as a chemist from 1938 to 1950 before pursuing formal artistic training with Arwid Karlson and Helge Nielsen at the Essem School in Malmö (1948–1953), complemented by self-directed study during travels in France, Yugoslavia, Spain, Italy, Austria, and Switzerland. Wernheden’s art encompassed realistic still lifes, figures, and landscapes in oil and watercolor, as well as wood and linoleum cuts. By the late 1950s, his work evolved toward abstraction. He exhibited individually at Krognoshuset in Lund, in Limhamn, and at Teaterhotellet gallery in Malmö.