Johanne Mathilde Dietrichson (née Bonnevie; July 12, 1837 - November 28, 1921) was a Norwegian painter who also made sculptures and ceramics.

She was the first Norwegian woman to receive a formal art education.

[1] Born in Christiana (now Oslo), Dietrichson grew up in Trondheim and Kongsberg.

She took a drawing class in Christiana, then on the advice of Camilla Collett and Adolph Tidemand she traveled to Düsseldorf to continue her education in 1857.

She accompanied him on his travels, living in Rome until 1865, in Stockholm from 1866-76, where she attended the Royal Academy of Painting and Sculpture, and in Christiana after 1876.