A capacitor includes a capacitor element, a pair of bus bars, and an insulating member. The capacitor element includes a positive electrode surface and a negative electrode surface. The pair of bus bars includes a positive electrode bus bar that is connected to the positive electrode surface of the capacitor element and a negative electrode bus bar that is connected to the negative electrode surface, A plate-shaped insulating member is disposed between the positive electrode bus bar and the negative electrode surface. A part of the insulating member is inserted into a bus bar through-hole provided in the positive electrode bus bar.