POWER OF ATTORNEY

The undersigned hereby constitutes and appoints each of Paul Hastings, Chief
Executive Officer of Nkarta, Inc., a Delaware corporation (the "Company"), Nadir
Mahmood, Chief Financial and Business Officer of the Company, and Alicia Hager,
Chief Legal Officer of the Company, the undersigned's true and lawful
attorney-in-fact to:

1	execute for and on behalf of the undersigned, in the undersigned's capacity as
an officer and/or director of the Company, Forms 3, 4, and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934, as amended and the rules
thereunder (the "Exchange Act"), and/or authenticating documents pursuant to the
rules governing the SEC's EDGAR Filer Management and application thereto;

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 United States Securities and Exchange Commission 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 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:

1	neither the Company nor the foregoing attorney-in-fact assumes (i) any
liability for the undersigned's responsibility to comply with the requirement of
the Exchange Act, (ii) any liability of the undersigned for any failure to
comply with such requirements or (iii) any obligation or liability of the
undersigned for profit disgorgement under Section 16(b) of the Exchange Act; and

2	this Power of Attorney does not relieve the undersigned from responsibility
for compliance with the undersigned's obligations under the Exchange Act,
including without limitation the reporting requirements under Section 16 of the
Exchange Act.

This Power of Attorney shall remain in full force and effect until 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
unless earlier revoked by the undersigned in a signed writing delivered to each
attorney-in-fact.

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IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 8th day of June, 2022.

/s/ Tiba Aynechi
TIBA AYNECHI