A light emitting device includes a substrate, a light emitting element and a light transmissive member. The substrate has a first main surface, a second main surface, and a mounting surface. The substrate includes an insulating base material defining a concave component opening on the second main surface and the mounting surface, a pair of connection terminals disposed on the first main surface, a pair of external connection sections disposed on the second main surface, and a pair of vias arranged at positions that interpose therebetween a line passing through a center of the concave component when viewed along a direction normal to the second main surface. The light emitting element has a pair of electrodes which connect to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element.