Provided is an electrical junction box having a highly versatile novel structure such that external wires can be connected thereto from multiple directions. An electrical junction box includes cases in which a circuit member is disposed, and the cases include an external-wire fastening part in which a connection part provided on the circuit member is exposed, and to which a connection terminal provided at an end of an external wire is to be fastened and fixed. The external-wire fastening part includes a fastener that is used to fasten and fix the connection terminal to the connection part, and the external-wire fastening part has a plurality of fastening points whose normals that extend from the central axis of the fastener to a peripheral wall of the cases have the same length, the plurality of fastening points being oriented in different directions.