A process for producing laminated glass, which comprises a forming step of heating a plurality of glass plates to the vicinity of the softening point and bending them into a predetermined shape; a lamination step of laminating the plurality of bent glass plates with an interlayer interposed there between; and a pressure bonding step of pressure bonding the laminated glass plates and the interlayer to form laminated glass; at least two glass plates among the plurality of glass plates constituting the laminated glass differing in the plate thickness; wherein at an any temperature between the annealing point and the softening point of the thick glass plate, the thick glass plate between the two glass plates differing in the plate thickness, has a lower viscosity than the thin glass plate, wherein the two glass plates differing in the plate thickness satisfy the formula 1<y<(1.22-0.206×x) and the formula 1<z<(1.15-0.131×x), wherein x (x=t 2 /t 1) is the ratio of the plate thickness (t 2) of the thin glass plate to the plate thickness (t 1) of the thick glass plate at room temperature; y (y=log 10 η 2 /log 10 η 1) is the ratio of the logarithm (log 10 η 2) of the viscosity of the thin glass plate to the logarithm (log 10 η 1) of the viscosity of the thick glass plate, at the annealing point of the thick glass plate; and z (z=log 10 η 4 /log 10 η 3) is the ratio of the logarithm (log 10 η 4) of the viscosity of the thin glass plate to the logarithm (log 10 η 3) of the viscosity of the thick glass plate, at the softening point of the thick glass plate, wherein the laminated glass is window glass for a vehicle, the number of the glass plates constituting the laminated glass is two, and the convex curved surface of the laminated glass is constituted by the convex curved surface of the thick glass plate, wherein the thin glass plate is a soda lime glass plate having a composition comprising, as calculated as oxides: Al 2 O 3: 0 to 3.5 mass%, and Na 2 O and K 2 O in total: 12.0 to 14.5 mass%; and the thick glass plate is a soda lime glass plate having a composition comprising, as calculated as oxides: Al 2 O 3: 0 to 2.0 mass%, and Na 2 O and K 2 O in total: 13.0 to 15.5 mass%; wherein the forming step is a step of heating the plurality of glass plates differing in the plate thickness to the vicinity of the softening point of the glass plate having a higher softening point i.e. the thinner glass plate and bending them to a predetermined shape, wherein a gravity forming method is employed, wherein the glass plates are placed on a ring mold and passed through a heating furnace to heat and soften them whereby to bend them into a predetermined shape by gravity, wherein the thicker glass plate is disposed on the lower side; and wherein, in the lamination step, the plurality of glass plates differing in the plate thickness are horizontally arranged and laminated so that the thicker glass plate is disposed closer to the convex curved surface of the glass laminate. wherein the forming step is a step of heating the plurality of glass plates differing in the plate thickness to the vicinity of the softening point of the glass plate having a higher softening point i.e. the thinner glass plate and bending them to a predetermined shape, wherein a gravity forming method is employed, wherein the glass plates are placed on a ring mold and passed through a heating furnace to heat and soften them whereby to bend them into a predetermined shape by gravity, wherein the thicker glass plate is disposed on the lower side; and wherein, in the lamination step, the plurality of glass plates differing in the plate thickness are horizontally arranged and laminated so that the thicker glass plate is disposed closer to the convex curved surface of the glass laminate.