For providing a joint connector which is miniaturized and general-purpose by designing an interval between needle shape terminal portions same as an interval between terminals of the general-purpose connector, the joint connector 1 includes a terminal 3 with a ferrite core 10, and a connector housing 2 receiving the terminal 3. The terminal 3 includes a busbar 28 and a plurality of needle shape terminal portions 29 extending from the busbar 28 at intervals along a direction of lengthwise of the busbar 28. The ferrite core 10 includes a first ferrite core 10a arranged at abase end 29a of the needle shape terminal portion 29 and a second ferrite core 10b arranged at an intermediate portion 29b of the needle shape terminal portion 29. The first ferrite core 10a and the second ferrite core 10b are arranged alternately at each of the plurality of needle shape terminal portions 29.