Provided are a polymer film having excellent adhesiveness with a substrate, and a laminate using the polymer film. The polymer film includes a layer A and a layer B on at least one surface of the layer A, in which the layer B contains a polymer having a dielectric loss tangent of 0.01 or less or 0.005 or less or a liquid crystal polymer, and a compound having a functional group, and the functional group is at least one group selected from the group consisting of a covalent-bondable group, an ion-bondable group, a hydrogen-bondable group, a dipole-interactable group, and a curing reactive group.