Bianca Wallin was born October 1, 1909 in Rome in Italy, died January 5, 2006 in , Sweden, was a Swedish artist.
Bianca Wallin grew up in , Sweden. She was the daughter of the Swedish artist David Wallin (1876–1957) and his wife Elin Wallin (1884–1969), Stockholm. Her father got a scholarship, so the family lived in Rome in Italy and in Paris in France for a couple of years and moved back to Stockholm in 1913. From that time on Stockholm became her home city. Her brother was the artist Sigurd Wallin (1916–1999) and her uncle was the artist Carl E. Wallin (1879–1968). Her education was influenced by her father’s work as an artist and already as a child she learned how to draw. As a daughter in this artistic family Bianca Wallin also early showed her own artistic talents, and she early knew that she wanted to become an artist. In 1935 Bianca Wallin married Gábor Kornél Tolnai (1902–1982), a Hungarian Diploma Engineer from Budapest. They settled down in Bromma, a borough in the western part of , and had three daughters, Eva (born 1939), Monika (born 1942) and Hillevi (born 1944).
After High School Exam in 1929 at at Kommendörsgatan 31 in she wanted to become an artist. Bianca Wallin began to study for one year, in 1929-1930, at in to learn figure painting and drawing. The artist school was situated at Kungsgatan 28 in Stockholm. As teachers at the school instructed in painting, Gottfrid Larsson in sculpture and Akke Kumlien in materials science.
After the year at the preparatory art school she studied for five years, 1930–1935, at the Swedish Royal Academy of Fine Arts in , Sweden, and there she received a genuine art education. Among the teachers at the Academy of Fine Arts were such famous artists as Isaac Grünewald and Wilhelm Smith in figure drawing and Albert Engström in drawing. During the years 1932-1934 her teacher at the etching school was , a painter and graphic artist.