An actuator device comprising: a support part; a first movable part; a second movable part formed in a frame shape and arranged so as to surround the first movable part; a pair of first connecting parts (5, 6) arranged on both sides of the first movable part in a first axis direction parallel to a first axis and connecting the first movable part to the second movable part so that the first movable part can swing around the first axis; and a pair of second connecting parts (7, 8) arranged on both sides of the second movable part in a second axis direction parallel to a second axis orthogonal to the first axis and connecting the second movable part to the support part so that the second movable part can swing around the second axis, wherein the second movable part includes a pair of first connection portions (41A, 41B) positioned on both sides of the first movable part on the first axis and connected to the pair of first connecting parts (5, 6), and a pair of second connection portions (42A, 42B) positioned on both sides of the first movable part on the second axis and connected to the pair of second connecting parts (7, 8), each of the pair of second connection portions (42A, 42B) includes a portion having a width larger than a width of a portion of the second movable part other than the pair of first connection portions (41A, 41B) and the pair of second connection portions (42A, 42B) when viewed in a direction orthogonal to the first and second axes (X, Y), and an inner edge of each of the pair of second connection portions (42A, 42B), when viewed in the direction orthogonal to the first and second axes (X, Y), includes a depression portion recessed in the second axis direction, and an outer edge of each of the pair of second connection portions (42A, 42B), when viewed in the direction orthogonal to the first and second axes (X, Y), includes a protrusion portion protruding in the second axis direction. a support part; a first movable part; a second movable part formed in a frame shape and arranged so as to surround the first movable part; a pair of first connecting parts (5, 6) arranged on both sides of the first movable part in a first axis direction parallel to a first axis and connecting the first movable part to the second movable part so that the first movable part can swing around the first axis; and a pair of second connecting parts (7, 8) arranged on both sides of the second movable part in a second axis direction parallel to a second axis orthogonal to the first axis and connecting the second movable part to the support part so that the second movable part can swing around the second axis, wherein the second movable part includes a pair of first connection portions (41A, 41B) positioned on both sides of the first movable part on the first axis and connected to the pair of first connecting parts (5, 6), and a pair of second connection portions (42A, 42B) positioned on both sides of the first movable part on the second axis and connected to the pair of second connecting parts (7, 8), each of the pair of second connection portions (42A, 42B) includes a portion having a width larger than a width of a portion of the second movable part other than the pair of first connection portions (41A, 41B) and the pair of second connection portions (42A, 42B) when viewed in a direction orthogonal to the first and second axes (X, Y), and an inner edge of each of the pair of second connection portions (42A, 42B), when viewed in the direction orthogonal to the first and second axes (X, Y), includes a depression portion recessed in the second axis direction, and an outer edge of each of the pair of second connection portions (42A, 42B), when viewed in the direction orthogonal to the first and second axes (X, Y), includes a protrusion portion protruding in the second axis direction.