POWER OF ATTORNEY

     Know all persons by these presents that the undersigned hereby constitutes
and appoints each of Harold Rogers, James Roe, Bahi Okupa-Hines, and Robert
Kelley signing individually, the undersigned's true and lawful attorneys-in fact
and agents to:

     (1)   execute for and on behalf of the undersigned, in the undersigned's
           capacity as an officer, director and/or greater than 10% stockholder
           of Coupang, Inc. (the "Company"), (a) Forms 3, 4, and 5 in accordance
           with Section 16(a) of the Securities Exchange Act of 1934, as amended
           (the "Exchange Act") and the rules thereunder, and (b) Form ID,
           Uniform Application for Access Codes to File on EDGAR, including
           Update Passphrase Confirmation, and any other documents necessary or
           appropriate to obtain codes and passwords enabling the undersigned to
           make electronic filings with the U.S. Securities and Exchange
           Commission (the "SEC") of reports required by Section 16(a) of the
           Exchange Act;

     (2)   do and perform any and all acts for and on behalf of the undersigned
           which may be necessary or desirable to complete and execute any such
           Form 3, 4, or 5, complete and execute any amendment or amendments
           thereto, and timely file such form with the SEC and any stock
           exchange or similar authority; and

     (3)   take any other action of any type whatsoever in connection with the
           foregoing which, in the opinion of such attorney-in-fact, may be of
           benefit to, in the best interest of, or legally required by, the
           undersigned, it being understood that the documents executed by such
           attorney-in-fact on behalf of the undersigned pursuant to this Power
           of Attorney shall be in such form and shall contain such terms and
           conditions as such attorney-in-fact may approve in such attorney-in-
           fact's discretion.


     The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Exchange Act.

     This Power of Attorney shall remain in full force and effect until the
earliest to occur of (a) the undersigned is no longer required to file Forms 3,
4 and 5 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, (b) revocation by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact or (c) as to any attorney-
in-fact individually, until such attorney-in-fact is no longer employed by the
Company or Gibson, Dunn & Crutcher LLP.

     The undersigned has caused this Power of Attorney to be executed as of May
15, 2022.


                                               By: /s/ Benjamin Sun
                                                   ---------------------------