A scroll compressor, comprising: a compression mechanism having a fixed scroll and a movable scroll and configured to compress a fluid; a crankshaft having a main shaft and an eccentric portion eccentrically provided at one end of the main shaft and coupled to a back side of the movable scroll; and a drive motor having a stator and a rotor coupled to the main shaft of the crankshaft, and configured to rotate the movable scroll, wherein at least one of the main shaft of the crankshaft or the rotor of the drive motor is provided with weights which balance a centrifugal force of the movable scroll during rotation and reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll; characterized in that the weights include balancing weights (81, 82) which balance the centrifugal force of the movable scroll during rotation, and warpage reducing weights (91, 92, 93) which reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll and a centrifugal force of the balancing weight (81, 82), the balancing weights (81, 82) include a first balancing weight of which a center of gravity is located opposite to the eccentric portion relative to an axial center of the main shaft, and a second balancing weight which is further from the eccentric portion than the first balancing weight is, and of which a center of gravity is located on a same side where the eccentric portion is positioned, relative to the axial center of the main shaft, the warpage reducing weights (91, 92, 93) include an upper warpage reducing weight which is provided at an upper portion of the main shaft and of which a center of gravity is located opposite to the eccentric portion relative to the axial center of the main shaft, a middle warpage reducing weight which is provided at a middle portion of the main shaft and of which a center of gravity is located on a same side where the eccentric portion is positioned relative to the axial center of the main shaft, and a lower warpage reducing weight which is provided at a lower portion of the main shaft and of which a center of gravity is located opposite to the eccentric portion relative to the axial center of the main shaft, and the upper warpage reducing weight, the middle warpage reducing weight, and the lower warpage reducing weight are balanced with one another. a compression mechanism having a fixed scroll and a movable scroll and configured to compress a fluid; a crankshaft having a main shaft and an eccentric portion eccentrically provided at one end of the main shaft and coupled to a back side of the movable scroll; and a drive motor having a stator and a rotor coupled to the main shaft of the crankshaft, and configured to rotate the movable scroll, wherein at least one of the main shaft of the crankshaft or the rotor of the drive motor is provided with weights which balance a centrifugal force of the movable scroll during rotation and reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll; characterized in that the weights include balancing weights (81, 82) which balance the centrifugal force of the movable scroll during rotation, and warpage reducing weights (91, 92, 93) which reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll and a centrifugal force of the balancing weight (81, 82), the balancing weights (81, 82) include a first balancing weight of which a center of gravity is located opposite to the eccentric portion relative to an axial center of the main shaft, and a second balancing weight which is further from the eccentric portion than the first balancing weight is, and of which a center of gravity is located on a same side where the eccentric portion is positioned, relative to the axial center of the main shaft, the warpage reducing weights (91, 92, 93) include an upper warpage reducing weight which is provided at an upper portion of the main shaft and of which a center of gravity is located opposite to the eccentric portion relative to the axial center of the main shaft, a middle warpage reducing weight which is provided at a middle portion of the main shaft and of which a center of gravity is located on a same side where the eccentric portion is positioned relative to the axial center of the main shaft, and a lower warpage reducing weight which is provided at a lower portion of the main shaft and of which a center of gravity is located opposite to the eccentric portion relative to the axial center of the main shaft, and the upper warpage reducing weight, the middle warpage reducing weight, and the lower warpage reducing weight are balanced with one another.