To provide an easily tearable packaging material which is high in strength and excellent in openability due to linear tearability in the machine direction (MD) and an easily unsealable packaging bag.

In the easily tearable packaging material, in laminated films 22, 24 and 25, each composed of at least three layers including a sealant layer, the outermost layer is a biaxially oriented polyester film having a maximum orientation angle of at least 30, a film layer adjacent to the sealant layer is an oriented film having linear tearability of a linear tear dislocation of 10 mm or below, and the lamination strength between the oriented film and the sealant layer is at least 2.5 N/cm. The easily unsealable packaging bag is made by heat-fusing the sealant layers of the easily tearable packaging materials in such a manner that the easy tear direction of the materials is the bag tearing direction.