Girl before a Mirror (French: Jeune fille devant un miroir) is an oil on canvas painting by Pablo Picasso, which he created in 1932.

The painting is a portrait of Picasso's mistress and muse, Marie-Thérèse Walter, who is depicted standing in front of a mirror looking at her reflection.

In 1932, Galerie Georges Petit presented a retrospective exhibition of his work, which was an unusual event for an artist, with Picasso taking control of the curation.

[2] Alfred H. Barr, Jr., Director of The Museum of Modern Art, reported that Picasso had said that he "preferred this painting to any of the others in the long series he had completed that spring".

In the background a vivid diamond pattern completes the scene, which is reminiscent of the harlequin with which Picasso so often identified in previous works.

[1] The composition is a complex arrangement of luminous colours and lines, compartmentalised into sections, which has resulted in the painting being likened to a stained-glass window or cloisonné enamel.

[8][9] Girl Before a Mirror is an illustration of Picasso's departure from traditional painting techniques, such as texture and tonality in the representation of the subject.

The image is abstract, as it depicts the woman's form unrealistically, using curvilinear lines and circular shapes to convey the fullness of her anatomy and her fertility.

The composition has been carefully constructed to offset the curvilinear forms of the woman's figure with the geometric diamond pattern that frames her.

[2] Picasso's rendering of the reflection in the mirror has been described by Debbie Goldberg at the Museum of Modern Art as a depiction of Death.

Picasso made reference to other artworks within his compositions and may have been influenced by a painting belonging to a friend which was an image of Death holding up a mirror to a woman.