A microneedle patch applicator housing, being formed from a single sheet or film having a top surface and an undersurface, the housing including a flat peripheral base part and a raised part surround by the peripheral base part and bulging vertically, with respect to the peripheral base part, from the undersurface toward the top surface, an undersurface portion of the raised part forming a surface supporting a microneedle patch, the raised part including a plurality of concavely bent parts, and the concavely bent parts each having a concave bottom toward a direction away from a center portion of the raised part.