Exhibit 24

                                POWER OF ATTORNEY

        The undersigned, as a Section 16 reporting person of Zymeworks Delaware
Inc. (the "Company"), hereby constitutes and appoints Daniel Dex and each of
the responsible attorneys and paralegals of Wilson Sonsini Goodrich & Rosati,
Professional Corporation, the undersigned's true and lawful attorney-in-fact
to:

        1.  complete and execute Forms ID, 3,4 and 5 and other forms and all
            amendments thereto as such attorney-in-fact shall in his or her
            discretion determine to be required or advisable pursuant to
            Section 16 of the Securities Exchange Act of 1934 (as amended) and
            the rules and regulations promulgated thereunder, or any successor
            laws and regulations, as a consequence of the undersigned's
            ownership, acquisition or disposition of securities of the Company;
            and

        2.  do all acts necessary in order to file such forms with the
            Securities and Exchange Commission, any securities exchange or
            national association, the Company and such other person or agency
            as the attorney-in-fact shall deem appropriate.

        The undersigned hereby ratifies and confirms all that said attorneys-
in-fact and agents shall do or cause to be done by virtue hereof. 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 Securities Exchange Act of 1934 (as amended).

        This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms ID, 3, 4 and 5 with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the Company and the foregoing attorneys-in-fact.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of July 12, 2022.


                                   Signature: /s/ Susan Mahony
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