To hold workpieces of different sizes and shapes in a reliable manner.

A hand includes: a pair of sliding parts configured to slide along a linear axis in directions in which the sliding parts get close to each other and get away from each other; and gripping parts fixed to each of the slides, and each of which has a holding claw at a tip portion thereof. The gripping parts are provided with joint portions configured to rotate around a rotation axis perpendicular to a plane including the liner axis and a tip of the claw, the joint portions including, for example, a first joint portion for rotating to thereby change the direction of the tips of the claws; and a second joint portion for rotating to thereby change the position of the first joint portion. A robot is also provided.