United States securities and exchange commission logo November 17, 2022 Shinyoung Park Chief Financial Officer Magnachip Semiconductor Corporation c/o MagnaChip Semiconductor S.A. 1, Allee Scheffer, L-2520 Luxembourg, Grand Duchy of Luxembourg Re: Magnachip Semiconductor Corporation Form 10-K for the Year Ended December 31, 2021 Filed February 23, 2022 File No. 001-34791 Dear Shinyoung Park: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Manufacturing