Anna Rosalie Boch (10 February 1848 – 25 February 1936) was a Belgian painter, born in Saint-Vaast, Hainaut. Anna Boch died in Ixelles in 1936 and is interred there in the Ixelles Cemetery, Brussels, Belgium.
Boch participated in the Neo-Impressionist movement. Her early works used a Pointillist technique, but she is best known for her Impressionist style which she adopted for most of her career. A pupil of Isidore Verheyden, she was influenced by Théo van Rysselberghe whom she met in the Groupe des XX.
Besides her own paintings, Boch held one of the most important collections of impressionist paintings of her time. She promoted many young artists including Vincent van Gogh whom she admired for his talent and who was a friend of her brother Eugène Boch. The Vigne Rouge (The Red Vineyard), purchased by Anna Boch, was long believed to be the only painting Van Gogh sold during his lifetime. The Anna Boch collection was sold after her death. In her will, she donated the money to pay for the retirement of poor artist friends.
140 of her own paintings were left to her godchild Ida van Haelewijn, the daughter of her gardener. Many of these paintings show Ida van Haelewijn as a little girl in the garden. In 1968 these 140 paintings were purchased by her great nephew Luitwin von Boch, the CEO of Villeroy & Boch Ceramics. The paintings remained in the house of Ida van Haelewijn until her death in 1992. The Anna & Eugène Boch Expo opened March 30, 2011.