The present invention relates to a biaxially oriented polypropylene film containing: a polypropylene resin as a main component thereof, having a weight average molecular weight of 100,000 or more and 500,000 or less, the weight average molecular weight being determined by gel permeation chromatography. The invention is characterized in that: at least one surface of the biaxially oriented polypropylene film has a protrusion volume of 2.0 x 10<4> [mu]m<3 > or more and 3.0 x 10<4> [mu]m<3 > or less, the protrusion volume being determined in an area of 560 [mu]m x 745 [mu]m using a super-depth surface profile measurement microscope by determining an average plane of the surface based on distances between plural points on the surface and an irradiation source of the super-depth surface profile measurement microscope and measuring a volume of protrusions projecting from the average plane.
Biaxially oriented polyproplyene film