La Loge ('The Theatre Box') is an 1874 oil painting by Pierre-Auguste Renoir. It is part of the collection at the Courtauld Institute of Art in London.

The painting depicts a young couple in a box at the Paris theatre. The woman was modeled by Nini Lopez, Renoir's new model who would feature in fourteen of his paintings over the next few years. The man in the painting was his brother Edmond, a journalist and art critic. Renoir's La Loge reflects an emerging interest in the "Theatre Box" as a new subject in during this time period. Going to the theatre in nineteenth-century France was as much about being seen as watching the performance. While the woman is making her presence obvious, her companion is scanning the audience through his opera-glasses.

This work encompasses the rising emphasis in fashion in art and its implications on social standing and wealth, while also embodying Renoir's aspirations and longing for the upper class's splendor.

The painting, La Loge, depicts a young woman, Nini Lopez, sitting a theatre box, while her male companion behind her uses a pair of binoculars to observe something above him.

The young woman is decadently dressed in a striking gown of bold black and white stripes, accessorized with ropes of pearls around her neck, a gold bracelet on her wrist, and an ermine stole gracefully draped across the back of her seat. The bold black and white stripes draw the viewer's gaze to the young woman. The black areas are mixed with blue to create the effect of shadow and light, while the white areas contains tones of blue, green and yellow to create shadows and highlights. In her lap she holds a black fan and a white lace handkerchief. Pink roses adorn her hair as well as the bodice of her gown. The soft hues of the flowers and her skin contrast the strong tones of the black and white gown as well as the darker tones of the background.

The setting of the painting is in a theatre box, where the balcony railing at the bottom corner of the painting suggests that the viewer is sitting in a neighboring theatre box.

An X-ray was taken of the painting and showed that the young woman may have originally had a hat, and there were some small adjustments made to the pose of the arm of the man in the background. Other than these adjustments, Renoir made minimal changes to the overall painting during the painting process.

Between the years 1873 and 1880, the theme of the theatre box allowed Renoir to explore the characteristic scenes of modern Paris and study the interplay between the current fashions and the idea of the theatre box as a place to see as well as a place to be seen. These modern-life paintings blurred the lines between portraiture and genre painting, as he would paint portraits of named individuals, while also depicting them in the context of modern images of everyday life. In La Loge, the individuals were the model Nini Lopez and his brother Edmond Renoir attending the theatre, a common activity of the Parisian upper class.