INTERLAYER FOR LAMINATED GLASS AND LAMINATED GLASS

There is provided an interlayer film for laminated glass with which protrusion of an interlayer film portion in the TD direction can be suppressed at the time of producing laminated glass. In the interlayer film for laminated glass according to the present invention, when, in the MD direction of the interlayer film, a birefringence index of the first surface part, a birefringence index of the second surface part, and a birefringence index of the center part are defined as ”nMDA, ”nMDB, and ”nMDC, respectively, ”nMDA, ”nMDB, and ”nMDC each are 0.25 × 10 -3 or less.