To provide an antireflection film whose production cost can be reduced by enhancing productivity and which has stable antireflection function over a long period of time.

The antireflection film has an antireflection layer obtained by stacking layers different from each other in refractive index on at least one face of a transparent film base material and each low refractive index layer constituting the antireflection layer is a silicon dioxide film formed by applying a sol prepared by hydrolyzing an organosilicon compound such as a silicon alkoxide.