To provide a biaxially oriented polyamide film which is formed from a polyamide compsn. comprising poly--capramide (N6), poly-m- xylyleneadipamide (MXD6), and an aliph. polyamide resin (PA) other than N6, N6 and PA having surface tensions satisfying a specific relation, and which is excellent in clarity and hygiene and in unsealability due to tearability along the direction of film length.

The compounding ratio by wt.% of N6/MXD6/PA is (77-93)/(5-13)/(2-10). The difference in surface tension (dyn/cm) between N6 and PA satisfies the formula: 3.0≤γA-γB≤15.0 (wherein γA is the surface tension of N6; and γB, that of PA). The surface tension of N6 is 45.2, and that of PA, which is mixed into N6, is required to be 30.2-42.2. Pref., the m.p. of PA is lower than that of N6. Pref., the melt viscosity of PA is 0.1-4.0 times that of N6. Pref., the glass transition point of PA is at least 20°C lower than the crystallization point of N6.