A character input apparatus to input a character using a touch and drag method, the character input apparatus including: an interface to display a character on a touched location, if a touch is detected on the interface; a control unit to control the interface to change the displayed character and a location of the displayed character according to a dragging trace, if the touched location is dragged; and an input unit to input the displayed character displayed when the touch is completed. Accordingly, characters may be conveniently input on a narrow screen.