To provide a wiper device capable of narrowing a layout space and allowing desired wiping motion without requiring a control circuit for forward and backward rotation of an output shaft.

The wiper device includes a wiper motor 11 rotatingly driving the output shaft 22b, first and second crank arms 15, 16 extending from the output shaft 22b to the opposite side to each other with an axis X of the output shaft 22b as the center, a first link rod 17 whose base part is connected to a front end of the first crank arm 15 and whose front end is connected to a first lever 24 driving a first wiper 25, and second link rod 18 whose base part is connected to a front end of the second crank arm 16 and whose front end is connected to a second lever 32 driving a second wiper 35. The first crank arm 15 is fixed to one end 22c of the output shaft 22b, whereas the second crank arm 16 is fixed to the other end 22d of the output shaft 22b.