A connector (20) to be connected to a device-side connector (10A) has terminals (21) to be connected to end parts of wires W, and terminal accommodating members (22A to 22D) accommodate the terminals (21). A holding member (41) includes two pair of side walls (42, 43) facing each other and two coupling walls (47, 47) connecting ends of the side walls (42, 43) in an extending direction and are configured to hold the terminal accommodating members (22A to 22D) side by side in a direction along the extending direction of the side walls (42, 43) between the side walls (42, 43). Each terminal accommodating member (22A to 22D) includes two supports (38, 38) projecting toward the respective side walls (42, 43) and supported on the respective side walls (42, 43).