(b Argos or Sikyon, fl c. 450–c. 415 BC). Greek sculptor. Along with Pheidias, with whom he is often compared in the sources, Polykleitos was the most important sculptor in bronze of the 5th century BC. He wrote a manual (the Canon) and headed the first recorded major ‘school’ of sculptors, which lasted three generations, and he influenced not only the sculpture of his own time but also Hellenistic and Roman sculpture.