A joint connector includes a housing that includes terminal chambers. At least two neighboring joint terminals are housed in terminal chambers neighboring among the terminal chambers, respectively. Each of the neighboring joint terminals includes a wire-crimping portion, a terminal body housed in a terminal chamber among the plurality of terminal chambers, and a pair of first and second contact portions, respectively. The first contact portion of one of the neighboring joint terminals is electrically contacted with the second contact portion of another of the neighboring joint terminals. A pair of spring tabs is formed on both sidewalls of the terminal body and contacts with opposed inner surfaces of the terminal chamber, respectively, by an elastic restoration behavior. According to the joint connector, an increase of a contact resistance to be generated by vibrations and temperature variations can be sufficiently restricted.