<p>The present invention relates to an angular velocity sensor. The angular velocity sensor (100) according to the present invention includes: a first mass (110a) and a second mass (110b); a first frame (120) which is placed outside the first and the second mass; a first flexible unit (130) which connects the first and the second mass and the first frame in the Y-axis direction; a second flexible unit (140) which connects the first and the second mass and the first frame in the X-axis direction; a second frame (150) which is placed outside the first frame; a third flexible unit (160) which connects the first frame and the second frame in the X-axis direction; and a fourth flexible unit (170) which connects the first frame and the second frame in the Y-axis direction. The first frame has a smaller Z-axis width than the second frame.</p>
