Acke, originally Andersson, (7 April 1859, Bergielund, Stockholm - 5 September 1924, Vaxholm), was a Swedish painter, illustrator and sculptor.

Acke was the son of the botanist and professor Nils Johan Andersson and the artist Anna Tigerhielm [sv].

However, the artists all shared a disdain for the prevailing Academic style and the Düsseldorf School, taking their inspiration from naturalism and Impressionism.

When his relationship with Anna Wengberg, another Swedish artist who painted in Önningeby, began to unravel, he married Topelius in 1891.

For several years, he worked on a large canvas, "Snöljus" (Snow Light, 1892), which depicted winter fishing through the ice in Åland.

The marriage remained childless but, during a trip to Italy in 1900 to 1901, they met an Italian family, whose three-year-old son Fausto they adopted in 1903.

He was working on a mural at the National History Museum, representing the philosophy of Emanuel Swedenborg, when he suddenly died, at home (the "Villa Akleja"), of apparent heart failure.