An apparatus and method for unlocking a mobile device using pattern recognition are provided. The apparatus includes a touch sensor unit sensing a predetermined pattern touch-input to a liquid crystal display (LCD) unit, a pattern recognition unit recognizing information about the input pattern sensed by the touch sensor unit, a pattern comparison unit comparing information about the input pattern recognized by the pattern recognition unit with information about a predetermined pattern set by a user, and a controller controlling supply of power to the LCD unit to enable the user to use the mobile device if the input pattern and the predetermined pattern are equal to each other as compared by the pattern comparison unit.