Decollage, in art, is the opposite of collage; instead of an image being built up of all or parts of existing images, it is created by cutting, tearing away or otherwise removing, pieces of an original image. Examples include inimage or etrécissements and excavations. A similar technique (though it is often or usually not intended to be artistic in nature) is the lacerated poster.

It can be argued that the depliage is a form of decollage, as it is made by initially removing the staples from a staple-bound magazine (see depliage ).