An electronic component package (100) includes a resin layer (40), an electronic component (10), a grounding member (30), and a conductor film (50). The grounding member (30) includes a multilayer body (31) and an outer conductor (32) disposed at an end portion of the multilayer body (31) in a lamination direction. The multilayer body (31) includes at least one resin film (31a) and at least one pattern conductor (31b) laminated one on another, and at least one via conductor (31c) extending in the lamination direction and connected to the outer conductor (32). In the multilayer body (31), at least one of the pattern conductor (31b) has at least part of a circumference connected to a conductor film (50) and electrically connected to the via conductor (31c). Part of an external terminal and part of the outer conductor (32) are exposed from an identical surface of the resin layer (40).