Provided are: a laminate having an outer surface thereof that is highly adhesive to a rubber material, and having sufficient gas barrier properties, interlayer adhesiveness and flex resistance; a multilayered structure including such a laminate; and a method for producing the same. A laminate including: a plurality of gas barrier layers (A) formed from a polymer including a gas barrier resin; and an elastomer layer (B) including at least one adhesive layer (B1), wherein a sum of number of the gas barrier layers (A) and number of the elastomer layer (B) is 5 or greater and 300 or less, the adhesive layer (B1) is laminated as at least an outermost layer, and the adhesive layer (B1) includes a styrene elastomer and is formed from a polymer having an iodine value of 200 or greater and 300 or less.