A terminal-equipped electric wire, a connector including the terminal-equipped electric wire and a manufacturing method of the connector are provided. The terminal-equipped electric wire includes an electric wire including a conductor core wire formed of a conductor material and a terminal formed of a composite metal material in which a plurality of types of metal materials are clad-bonded with each other. The terminal includes a first connection portion and a second connection portion, each of which is formed of a metal material of respective one of the plurality of types of metal materials. The conductor core wire is electrically connected to one of the first and second connection portions, the one corresponding to the conductor material forming the conductor core wire.