Mannerism, Italian Manierismo, (from maniera, “manner,” or “style”), artistic style that predominated in Italy from the end of the High Renaissance in the 1520s to the beginnings of the Baroque style around 1590. The Mannerist style originated in Florence and Rome and spread to northern Italy and, ultimately, to much of central and northern Europe. The term was first used around the end of the 18th century by the Italian archaeologist Luigi Lanzi to define 16th-century artists who were the followers of major Renaissance masters. Mannerism originated as a reaction to the harmonious classicism and the idealized naturalism of High