February 10, 2020 Neal Fowler Chief Executive Officer Liquidia Technologies, Inc. 419 Davis Drive, Suite 100 Morrisville, NC 27560 Re: Liquidia Technologies, Inc. Registration Statement on Form S-3 Filed February 3, 2020 File No. 333-236227 Dear Mr. Fowler: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests for acceleration. 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. Please contact Jeffrey Gabor at 202-551-2544 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences cc: Andrew P. Gilbert, Esq.