Compressor and refrigeration cycle device

A compressor is provided with a motor unit, a rotating shaft, and a compression mechanism unit for compressing a refrigerant in a sealed container, the compression mechanism unit having a cylindrical cylinder forming a cylinder chamber, a rotating piston, a vane, and a bearing for closing the cylinder chamber, and in the cylinder, a suction hole through which the refrigerant sucked into the cylinder chamber passes is formed so as to extend in the radial direction of the cylinder. The suction hole has: a suction hole outer diameter connection section that forms a space located on the outer circumferential side of the cylinder in the radial direction; and a suction hole inner diameter connection section that forms a space located on the inner circumferential side in the radial direction of the cylinder, the cross-sectional area of the suction hole outer diameter connection section in a cross-section orthogonal to the radial direction of the cylinder being formed larger than the cross-sectional area of the sucti