An apparatus for carrying a car seat such as an infant car seat, child car seat, or a child booster seat is disclosed. The apparatus includes a carrier body and at least one system of harnesses for attaching to the car seat, and for securing the apparatus on a person's back, chest, or side, leaving the person's hands free. The system of harnesses may include an upper harness system, a middle harness system, a lower harness system, a shoulder harness system, and a hip harness system. The apparatus permits a person to carry the car seat together with a child secured in the car seat.