An interlayer for a laminated glass is provided. The interlayer film contains (a) a polyvinyl acetal with an acetalization degree of 60 to 80 mol %, a content of a vinyl ester monomer unit of from 0.1 to 20 mol %, and a viscosity-average degree of polymerization of from 1400 to 4000, and (b) light-diffusing fine particles in which an absolute value difference between a refractive index of the light-diffusing fine particles and a refractive index of the intrlayer excluding the light-diffusing fine particles is 0.20 or more and a haze as measured in accordance with JIS K 7105 for a laminated glass prepared by sandwiching the interlayer film between two glass sheets with a thickness of 3 mm is 20% or less.