A physical quantity sensor comprising: a substrate; and an element section that is supported at the substrate, wherein the element section includes a fixed portion that is attached to the substrate, a movable portion, and a support beam that connects the fixed portion to the movable portion, wherein the movable portion is displaceable with the support beam as a rotation axis, wherein the movable portion includes a first mass part that is located in a first direction orthogonal to the rotation axis on one side of the rotation axis, a second mass part that is located in the first direction on the other side of the rotation axis, and a connection part that is connected to the support beam, and connects the first mass part to the second mass part, wherein the connection part includes a first slit, a second slit that is located on the first mass part side of the first slit, and a third slit that is located on the second mass part side of the first slit, and wherein an axis along the first direction through the center of the first slit in a plan view is referred to as a first central axis, an axis along the first direction through the center of the second slit in a plan view is referred to as a second central axis, and an axis along the first direction through the center of the third slit in a plan view is referred to as a third central axis, and wherein each of the second central axis and the third central axis is deviated in direction of the rotation axis with respect to the first central axis, wherein the first slit has a longitudinal shape along the first direction, and wherein each of the second slit and the third slit have a longitudinal shape along the first direction. a substrate; and an element section that is supported at the substrate, wherein the element section includes a fixed portion that is attached to the substrate, a movable portion, and a support beam that connects the fixed portion to the movable portion, a fixed portion that is attached to the substrate, a movable portion, and a support beam that connects the fixed portion to the movable portion, wherein the movable portion is displaceable with the support beam as a rotation axis, wherein the movable portion includes a first mass part that is located in a first direction orthogonal to the rotation axis on one side of the rotation axis, a second mass part that is located in the first direction on the other side of the rotation axis, and a connection part that is connected to the support beam, and connects the first mass part to the second mass part, a first mass part that is located in a first direction orthogonal to the rotation axis on one side of the rotation axis, a second mass part that is located in the first direction on the other side of the rotation axis, and a connection part that is connected to the support beam, and connects the first mass part to the second mass part, wherein the connection part includes a first slit, a second slit that is located on the first mass part side of the first slit, and a third slit that is located on the second mass part side of the first slit, and a first slit, a second slit that is located on the first mass part side of the first slit, and a third slit that is located on the second mass part side of the first slit, and wherein an axis along the first direction through the center of the first slit in a plan view is referred to as a first central axis, an axis along the first direction through the center of the second slit in a plan view is referred to as a second central axis, and an axis along the first direction through the center of the third slit in a plan view is referred to as a third central axis, and wherein each of the second central axis and the third central axis is deviated in direction of the rotation axis with respect to the first central axis, wherein the first slit has a longitudinal shape along the first direction, and wherein each of the second slit and the third slit have a longitudinal shape along the first direction.