Aleksandra Aleksandrovna Ekster (née Grigorovich) (18 January 1882 – 17 March 1949), also known as Alexandra Exter, was a Russian and French painter and designer.

As a young woman, her studio in Kiev attracted all the city's creative luminaries, and she became a figure of the Paris salons, mixing with Picasso, Braque and others. She is identified with the Russian/Ukrainian avant-garde, as a Cubo-futurist, Constructivist, and influencer of the Art Deco movement. She was the teacher of several School of Paris artists such as Abraham Mintchine, Isaac Frenkel Frenel and the film directors Grigori Kozintsev, Sergei Yutkevich among others.