Provided is an integrated circuit which includes: a plurality of conductive lines extending in a first horizontal direction on a plane separate from a gate line, and including first and second conductive lines; a source/drain contact having a bottom surface connected to a source/drain region, and including a lower source/drain contact and an upper source/drain contact which are connected to each other in a vertical direction; and a gate contact having a bottom surface connected to the gate line, and extending in the vertical direction, in which the upper source/drain contact is placed below the first conductive line, and the gate contact is placed below the second conductive line. A top surface of the lower source/drain contact may be larger than a bottom surface of the upper source/drain contact.