A connector is provided, which can seek miniaturization by suppressing external form dimensions of an inner housing. The connector includes, as means for engaging and uniting housing division bodies 20 and 30 that constitute the inner housing 10, engagement pieces 22 equipped on one side of the housing division bodies and inserted between adjacent terminal accommodation portions 13 in the other side of the housing division bodies, and locking portions equipped between the terminal accommodation portions 13 in the other side of the housing division bodies and engaged with the inserted engagement pieces to make the housing division bodies 20 and 30 in a connection state.