A card connector small in thickness and size. A card connector (1) has a contact (4), an insulative housing (2) for holding the contact (4), and a push/pull-type cam mechanism section (18) provided inthe housing and driven in the direction of insertion and removal of a card by pushing operation of the card. The cam mechanism section (18) has a locking spring element (40) for locking the card inserted into the housing (2) and a slider (26) having a groove (38). The housing (2) has a positioning member (28) swingably provided in the housing (2) and engaging in the cam groove (38) to position the slider (26) according to pushing operation of the card. The slider (26) is located in substantially the same plane as the card, and the locking spring element (40) is disposed adjacent to the cam groove (38) so as to guide the positioning member (28).