Petter Gabriel Wickenberg, known as Per (1 October 1812- 19 December 1846) was a Swedish painter and designer who specialized in landscapes with figures.
The following year, friends and family took up a collection and raised enough money for him to enroll at the Royal Swedish Academy of Fine Arts.
To complete his studies, he earned some money by colorizing the illustrations of naval officer Carl Gustaf Forsell [sv] (1783-1848) for publication in Ett år i Sverige.
He also received support from Johan Gustaf Sandberg (1782–1854) which proved critical, as well as from the new Swedish Association for Art (Sveriges allmänna konstförening) which had been founded in 1832.
During this time, he suffered from increasingly poor health and his eye disorder recurred every year, leaving him unable to paint.