Alexander Calder (Lawnton, Pennsylvania, 1898 - Nueva York, 1976) was an American sculptor and visual artist best known for his innovative mobiles and kinetic sculptures. Trained as an engineer and later in fine arts, Calder developed a unique approach combining movement, balance, and playful abstraction.

His work spans sculpture, painting, jewelry, and stage design, and he is celebrated for transforming the way audiences experience space and form. Calder’s art has been exhibited internationally and continues to influence generations of contemporary artists.