United States securities and exchange commission logo





                     June 17, 2020

       David Obstler
       Chief Financial Officer
       Datadog, Inc.
       620 8th Avenue, 45th Floor
       New York, NY 10018

                                                        Re: Datadog, Inc.
                                                            Form 10-K for the
Fiscal Year Ended December 31, 2019
                                                            Filed February 25,
2020
                                                            File No. 001-39051

       Dear Mr. Obstler:

              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 Technology