Eleni Prokopiou (Greek: Ελένη Προκοπίου, Athens , 1939 – Athens, September 27, 2026) was a Greek actress, dancer, and choreographer.

She rose to prominence through her appearances in films from the golden age of Greek cinema. Between her film debut in 1960 and 1972, she appeared in a total of 23 movies. She held leading roles in many of these—particularly when the part required dancing—as she was a dancer herself and choreographed her own routines for some of the films. She began studying dance at the age of six alongside Martha Karagianni at the dance school of Loukia Sakellariou-Kotsopoulou, who had established her own academy at the Athens Conservatoire. As children, she and Martha Karagianni performed together at the Greek National Opera. They graduated in the late 1950s. She formed a dance duo with Vangelis Seilinos, performing together in both theater and film. From 1960 to 1965, the Seilinos-Prokopiou duo performed in dance numbers at most of the capital's revue theaters. She also formed an on-screen duo with Giorgos Pantzas, appearing together in five films.