An integrated circuit including: a power rail including first and second conductive lines spaced apart from each other in a vertical direction, wherein the first and second conductive lines extend in parallel to each other in a first horizontal direction, and are electrically connected to each other, to supply power to a first standard cell, wherein the first and second conductive lines are disposed at a boundary of the first standard cell; and a third conductive line between the first and second conductive lines and extending in a second horizontal direction orthogonal to the first horizontal direction, to transfer an input signal or an output signal of the first standard cell.