To provide a gas liquid separator capable of effectively preventing a strainer from clogging due to foreign matter and reliably returning oil to a compressor.

A gas liquid separator 1 has a cylindrical body 2 one end of which is open, a header 3 which seals an open end of the body and in which a refrigerant inflow hole 3d and a refrigerant outflow hole 3e are bored, a refrigerant ejection pipe 5 one end of which is connected to the refrigerant outflow hole and the other end of which is located near the bottom 2a of the body in the body, a refrigerant suction pipe 4 which surround the refrigerant ejection pipe an end of a header side of which is open, and in which an oil return hole 4a is formed at an end of the bottom side of the body, and the strainer 6 interposed between the oil return hole formed in the refrigerant suction pipe and the inside of the body and is characterized in that the body bottom side end of the refrigerant suction pipe protrudes to the body bottom side while being surrounded by the strainer, and the oil return hole is formed in the distal end of the same.