A Lady in Her Bath is an oil on wood painting by French artist François Clouet, created in 1571.

The picture is in the National Gallery of Art, Washington DC, and is one of only three paintings signed by Clouet.

It is possible that she is Diane de Poitiers, mistress of King Henry II of France when she was a teenager.

[3] The National Gallery writes: The masklike symmetry of the bather's face makes exact identification difficult; scholars have suggested that her aristocratic features indicate that she is one of several royal mistresses, most notable among them Diane de Poitiers, the mistress of Henry II.

The contrast of the smoothly rendered nude figure to the intricate surface details of the fruit, draperies, and jewelry, presents a union of Flemish and Italian motifs that characterized French courtly art of the sixteenth century.