An apparatus for testing a semiconductor package including a shuttle, a socket and a pressing unit may be provided. The shuttle may include a pocket, which is configured to receive the semiconductor package and a printed circuit board (PCB). The PCB may be configured to make electrical contact with the semiconductor package. The socket may be arranged under the shuttle and include socket pins configured to make electrical contact with the PCB. The pressing unit may be arranged on the shuttle and may be movable in a vertical direction. The pressing unit may press on the shuttle toward the socket such that the semiconductor package may be electrically connected to the socket pins. Because the semiconductor package received in the shuttle may make contact with the socket at the testing region to test the semiconductor package, the semiconductor package may not fall off or may not be slanted.