It is aimed to provide a shield connector and an outer conductor terminal capable of improving sealing performance and assemblability. An outer conductor terminal includes an outer conductor terminal body having an insertion opening for a dielectric in a rear surface, and a lid member separate from the outer conductor terminal body and to be mounted into the outer conductor terminal body. The outer conductor terminal body includes a lock receiving portion on each side surface. The lid member includes a back portion for covering the insertion opening, and a pair of side portions connected to the back portion and configured to cover the respective side surfaces of the outer conductor terminal body. Locking portions to be locked to the lock receiving portions are provided on the pair of side portions.