A scroll compressor includes a shell, a fixed scroll and an orbiting scroll disposed in the shell, a first scroll wrap and a second scroll wrap that are provided in the fixed scroll and the orbiting scroll, respectively, and that are engaged with each other to form a plurality of compression chambers, a crankshaft that causes the orbiting scroll to perform eccentric revolving motion, a tip seal member that is inserted in the tip of the second scroll wrap along the spiral direction and that is in sliding contact with the first baseplate of the fixed scroll, and injection ports that are provided through the first baseplate of the fixed scroll and that introduce refrigerant at an intermediate pressure between suction pressure and discharge pressure into the compression chambers from the outside of the shell.