Aleksandra Ekster (1882–1949) was a groundbreaking Russian-Ukrainian painter, designer, and a key figure in the early 20th-century avant-garde. A pioneer of Cubo-Futurism and Constructivism, she studied in Kyiv, Paris, and Moscow, absorbing influences from Cubism, Futurism, and Russian folk art. Ekster was known for her vivid use of color and dynamic compositions that blended geometry with lyrical abstraction. Beyond painting, she was a visionary stage and costume designer, collaborating with prominent theaters and contributing to revolutionary visual language in performance art. She played a vital role in integrating Western European modernist trends into Russian art and mentored many younger artists. After emigrating to France in the 1920s, she continued to innovate through book illustration and decorative arts. Ekster’s legacy lies in her fearless experimentation and cross-disciplinary influence, making her a central figure in shaping modern art.