To provide a biaxially oriented polyamide film which maintains transparency and has an excellent sliding property at a high humidity condition.

The biaxially oriented polyamide film contains an inorganic particle and a bisamide of a long chain fatty acid. The inorganic particle consists of (A) silica with an average particle size of 1-2 μm and (B) silica with an average particle size of 2-3 μm. The total content of (A) and (B) is 0.1-0.3 mass %, the mass ratio (A)/(B) is 3/1 or above, the bisamide of a long chain fatty acid is a bisamide consisting of a fatty acid with 20C or more and the bisamide content is 0.1-0.3 mass %.