An integrated circuit may include a first standard cell including first and second active regions extending in a first horizontal direction and a first gate line extending in a second horizontal direction orthogonal to the first horizontal direction; and a second standard cell including third and fourth active regions extending in the first horizontal direction and a second gate line aligned in parallel to the first gate in the second horizontal direction and being adjacent to the first standard cell. A distance between the second active region of the first standard cell and the third active region of the second standard cell may be greater than a distance between the first and second active regions of the first standard cell, and may be greater than a distance between the third and fourth active regions of the second standard cell.