Provided is an injection nozzle which is capable of maintain high response performance over a long period of time, in a manner compatible with an increase in fuel injection pressure of a high-pressure common rail system which is one type of fuel injection system for internal combustion engines such as diesel engines. The injection nozzle comprises a valve body 1, and a needle valve 2 disposed in an inner bore of the valve body 1 and adapted to intermittently seal an injection port 11 of the nozzle body 1, wherein at least a distal end 22 of the needle valve 2 is made of a metallic glass.