A multipolar connector having a housing made of an insulating material, and a plurality of terminals to which are held by said housing, wherein said plurality of terminals to include: a terminal pair (P3, P4) in which two terminals, that are adjacent to each other are paired while disposing a first gap; and one non-paired terminal or which is adjacent to said terminal pair (P3, P4) while disposing a second gap, said terminal pair (P3, P4) being the pair for transmitting differential signals, said first gap being narrower than said second gap, and in each of said terminals, of said terminal pair (P3, P4), and said non-paired terminal or, a contacting portion which is to be connected to a counter terminal, a terminal portion which is to be connected to a connection object, and a supporting portion through which said contacting portion and said terminal portion are coupled to each other are disposed, and said connector having a metal-made shield case which surrounds a periphery of said housing, characterized in that respective center lines,,, of said terminals, of said terminal pair (P3, P4), and said non-paired terminal or, extend linearly and parallel in a plan view along the whole length of each terminal and in the direction of inserting and extracting a counter connector, and the plurality of terminals to include two or more terminal pairs (P1, P2), (P3, P4), (P5, P6), the gap between two adjacent terminal pairs (P1, P2) and (P3, P4), or (P3, P4) and (P5, P6) being the second gap, said plurality of terminals to are juxtaposed on the same plane in the housing, and said plurality of terminals to forming a coplanar waveguide structure together with said shield case. a terminal pair (P3, P4) in which two terminals, that are adjacent to each other are paired while disposing a first gap; and one non-paired terminal or which is adjacent to said terminal pair (P3, P4) while disposing a second gap, said terminal pair (P3, P4) being the pair for transmitting differential signals, said first gap being narrower than said second gap, and in each of said terminals, of said terminal pair (P3, P4), and said non-paired terminal or, a contacting portion which is to be connected to a counter terminal, a terminal portion which is to be connected to a connection object, and a supporting portion through which said contacting portion and said terminal portion are coupled to each other are disposed, and said connector having a metal-made shield case which surrounds a periphery of said housing, characterized in that respective center lines,,, of said terminals, of said terminal pair (P3, P4), and said non-paired terminal or, extend linearly and parallel in a plan view along the whole length of each terminal and in the direction of inserting and extracting a counter connector, and the plurality of terminals to include two or more terminal pairs (P1, P2), (P3, P4), (P5, P6), the gap between two adjacent terminal pairs (P1, P2) and (P3, P4), or (P3, P4) and (P5, P6) being the second gap, said plurality of terminals to are juxtaposed on the same plane in the housing, and said plurality of terminals to forming a coplanar waveguide structure together with said shield case.