For similarly pronounced words, see sheer, Shere, or sher.

Shear as a noun may refer to:

• Bias (textile), in clothing design, fabric may be cut on the shear
• Geological shear, a form of fault
• Guillotine (metalwork), also called a shear, a machine used to cut sheet metal
• Shear line, in lockpicking, where the inner cylinder ends and the outer cylinder begins in a cylinder lock
• Shear (mathematics), a particular kind of linear mapping, also called transvections
• Shear stress and shear strength, in physics, a stress state refers to deformation of a body in which parallel internal surfaces slide past one another
• Wind shear, a difference in wind speed or direction between two wind currents in the atmosphere

Shear as a verb or shearing may refer to

• Sheep shearing, the process of removing the wool from a sheep
• Shearing interferometer, in optics, a simple and very common means to check the collimation of beams by observing interference
• Skin, specifically, the tearing and splitting of the layers

Scherung