Adelheid Fanny Martha Stettler (25 September 1870 – 16 December 1945) was a Swiss painter and engraver.

[3] The Académie de la Grande Chaumière, of which Stettler was a co-founder, had its origin in a group of art students.

[1] She won a medal for work exhibited at the 1910 Exposition universelle in Brussels and contributed a painting to the Swiss pavilion at the 1920 Venice Biennale.

[3] Stettler's subjects included many outdoor scenes of children playing in the Jardin du Luxembourg and the Tuileries Garden, as well as interiors, still lifes, landscapes, portraits and animal studies.

Stettler's works are held by the Kunstmuseum Winterthur, the Museum of Fine Arts Bern, the Musée d'Art et d'Histoire in Geneva, the Musée du Luxembourg in Paris, and the Galleria Nazionale d'Arte Moderna in Rome.