A scroll compressor (100, 120) comprising: a hermetic container; a compression mechanism (Cm) disposed in the hermetic container, the compression mechanism (Cm) having a refrigerant compression chamber and a refrigerant suction chamber disposed upstream of the refrigerant compression chamber in a direction in which refrigerant flows; and an injection pipe (23, 123) fitted in the hermetic container, the compression mechanism (Cm) including a fixed scroll including a first end plate having a discharge passage, into which the refrigerant flows out of the refrigerant compression chamber, and a first spiral element disposed on the first end plate, and an orbiting scroll including a second end plate disposed at a distance from the first end plate and a second spiral element disposed on the second end plate, the second spiral element defining the refrigerant compression chamber between the first spiral element, the first end plate having an injection passage (1E, 1EE) through which the refrigerant is supplied to the refrigerant suction chamber, the injection passage (1E, 1EE) including an outlet passage section (1E3, 1G) that opens into the refrigerant suction chamber and extends linearly, the refrigerant compression chamber being disposed on an extension of the outlet passage section (1E3, 1G), the outlet passage section (1E3, 1G) including a first outlet passage section (1E3a, 1Ga) that opens into the refrigerant suction chamber and extends linearly and a second outlet passage (1E3b, 1Gb) section that opens into the refrigerant suction chamber and extends linearly, the injection passage (1E, 1EE) including an inlet passage section (1E1, 32) being connected to the injection pipe (23, 123), a first branch passage section (1E2a, 33A) having an upstream end being connected to the inlet passage section (1E1, 32) and a downstream end being connected to the first outlet passage section (1E3a, 1Ga), and a second branch passage section (1E2b, 33B) having an upstream end being connected to the inlet passage section (1E1, 32) and a downstream end being connected to the second outlet passage section (1E3b, 1Gb). a hermetic container; a compression mechanism (Cm) disposed in the hermetic container, the compression mechanism (Cm) having a refrigerant compression chamber and a refrigerant suction chamber disposed upstream of the refrigerant compression chamber in a direction in which refrigerant flows; and an injection pipe (23, 123) fitted in the hermetic container, the compression mechanism (Cm) including a fixed scroll including a first end plate having a discharge passage, into which the refrigerant flows out of the refrigerant compression chamber, and a first spiral element disposed on the first end plate, and an orbiting scroll including a second end plate disposed at a distance from the first end plate and a second spiral element disposed on the second end plate, the second spiral element defining the refrigerant compression chamber between the first spiral element, a fixed scroll including a first end plate having a discharge passage, into which the refrigerant flows out of the refrigerant compression chamber, and a first spiral element disposed on the first end plate, and an orbiting scroll including a second end plate disposed at a distance from the first end plate and a second spiral element disposed on the second end plate, the second spiral element defining the refrigerant compression chamber between the first spiral element, the first end plate having an injection passage (1E, 1EE) through which the refrigerant is supplied to the refrigerant suction chamber, the injection passage (1E, 1EE) including an outlet passage section (1E3, 1G) that opens into the refrigerant suction chamber and extends linearly, the refrigerant compression chamber being disposed on an extension of the outlet passage section (1E3, 1G), the outlet passage section (1E3, 1G) including a first outlet passage section (1E3a, 1Ga) that opens into the refrigerant suction chamber and extends linearly and a second outlet passage (1E3b, 1Gb) section that opens into the refrigerant suction chamber and extends linearly, the injection passage (1E, 1EE) including an inlet passage section (1E1, 32) being connected to the injection pipe (23, 123), a first branch passage section (1E2a, 33A) having an upstream end being connected to the inlet passage section (1E1, 32) and a downstream end being connected to the first outlet passage section (1E3a, 1Ga), and a second branch passage section (1E2b, 33B) having an upstream end being connected to the inlet passage section (1E1, 32) and a downstream end being connected to the second outlet passage section (1E3b, 1Gb).