A backlight assembly capable of reducing a frame size, and a liquid crystal display (LCD) apparatus having the backlight assembly is provided. The backlight assembly includes a bottom chassis having a receiving space, a lamp unit disposed at an edge portion of the receiving space, a light-guide plate disposed on the receiving space and an optical sheet. The lamp unit includes a light-emitting lamp a lamp cover covering a portion of the lamp and a sheet-fixing part that protrudes in an upward direction. The light-guide plate guides light from the lamp unit toward an upward direction. The optical sheet includes a fixing hole in which the sheet-fixing part is be inserted.