A terminal device for a vehicle AC generator including a common base terminal group 100A1 having a plurality of terminals and an external connector terminal 200A1 formed by integrating a plurality of individual connector terminals having connecting terminals with respect to the external device at one ends thereof and having connecting terminal portions to be connected to a regulator circuit at the other ends thereof by premolding with respect to each other, in which the external connector terminal is arranged at predetermined positions of the common base terminal group, and the common base terminal group and the external connector terminal are integrally mold-formed with resin.