Gustave Moreau was born in Paris in 1826. His father, Louis Moreau, was an architect who encouraged his son's education and interest in art. Moreau began drawing at an early age.
During the 1840s he studied in the private workshop of the painter François-Édouard Picot. He entered the École des Beaux-Arts in Paris in 1846.
Moreau initially worked within the traditions of French academic painting. He was particularly interested in subjects drawn from history, mythology, religion, and literature rather than scenes of contemporary everyday life.
In 1857 Moreau traveled to Italy for an extended period of study. He spent considerable time examining Renaissance paintings and copying works by earlier masters. His encounters with Italian art became important to the development of his own increasingly personal style.
Moreau returned to Paris in 1859. During the following years he worked toward a new kind of history painting in which ancient stories became vehicles for imaginative and symbolic interpretation.
His return to the Paris Salon with Oedipus and the Sphinx in 1864 brought him significant attention. The painting demonstrated his determination to continue working with mythological subjects at a time when many French artists were turning toward contemporary life.
Moreau increasingly developed densely ornamented compositions that resist easy placement in a particular historical setting. Architecture, jewelry, costumes, plants, and symbolic objects may draw upon different periods and cultures within the same image.
Biblical subjects became particularly prominent during the 1870s. Moreau repeatedly explored the death of John the Baptist and the role of Salome. His paintings of the subject became some of the most influential works of his career.
At the Salon of 1876 he exhibited Salome Dancing before Herod as well as the watercolor The Apparition. These works helped establish Salome as one of the defining figures of late nineteenth-century Symbolist imagination.
Moreau continued to work on paintings, watercolors, and drawings while increasingly withdrawing from regular Salon exhibitions. His interests extended beyond biblical subjects to mythology, poetry, and allegory.
In 1892 he became a professor at the École des Beaux-Arts. His students included artists who would later pursue very different forms of modern art, among them Henri Matisse, Georges Rouault, Albert Marquet, and Henri Manguin. Moreau encouraged his students to develop individual approaches rather than simply imitate his own style.
During his final years Moreau arranged for his Paris home and studio to become a museum containing his work. He died in Paris in 1898. The Musée Gustave Moreau subsequently opened in the building, preserving an unusually large body of paintings, watercolors, drawings, and studies associated with his career.