Mail Stop 4628 October 3, 2018 Via Email Mr. Andrew G. Inglis, Chairman of the Board and Chief Executive Officer Kosmos Energy Ltd. Clarendon House 2 Church Street Hamilton, Bermuda HM 11 Re: Kosmos Energy Ltd. Form 10-K for the Fiscal Year ended December 31, 2017 Filed February 26, 2018 File No. 001-35167 Dear Mr. Inglis: 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, /s/ Brad Skinner Brad Skinner Senior Assistant Chief Accountant Office of Natural Resources