An angular velocity sensor includes: a frame including a pair of first beams extending in a first direction and opposed to each other in a second direction orthogonal to the first direction, a pair of second beams extending in the second direction and opposed to each other in the first direction, and connections between those pairs; a drive unit that vibrates the frame in a first plane, to which the first and second directions belong, in a vibration mode in which when one pair of those pairs move closer to each other, the other move away from each other, and vice versa; a first detector that detects, based on the amount of deformation of the frame in the first plane, an angular velocity around an axis of a third direction orthogonal to the first plane; and a support mechanism including a base portion and joint portions.