Exhibit 5.1

December 1, 2021

Dollar Tree, Inc.
500 Volvo Parkway
Chesapeake, Virginia 23320

Ladies and Gentlemen:

We have acted as special counsel to Dollar Tree, Inc., a Virginia corporation (the “Company”), in connection with the offering and sale by the Company of $800,000,000 aggregate principal amount of its 2.650% Senior Notes due 2031 and $400,000,000 aggregate principal amount of its 3.375% Senior Notes due 2051 (collectively, the “Securities”), in an underwritten public offering pursuant to the Underwriting Agreement, dated as of November 29, 2021 (the “Underwriting Agreement”), by and among the Company and J.P. Morgan Securities LLC and BofA Securities, Inc., as Representatives of the several Underwriters listed in Schedule 1 to the Underwriting Agreement (the “Underwriters”). The Securities are to be issued under the Indenture, dated as of April 2, 2018 (the “Base Indenture”), between the Issuer and U.S. Bank National Association, as trustee (the “Trustee”), as supplemented by the Second Supplemental Indenture, dated as of December 1, 2021 (the “Second Supplemental Indenture”), between the Issuer and the Trustee (the Base Indenture, as amended and supplemented by the Second Supplemental Indenture, the “Indenture”). All capitalized terms not otherwise defined herein shall have the meanings ascribed to them in the Underwriting Agreement.

We have examined: (i) the Registration Statement on Form S-3 (Registration No. 333-261307) filed with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”), on November 23, 2021 by the Company; (ii) the preliminary prospectus dated November 29, 2021 forming a part thereof (the “Preliminary Prospectus”); (iii) the final prospectus dated November 30, 2021 in the form filed with the Commission pursuant to Rule 424(b) under the Securities Act on November 30, 2021 (the “Final Prospectus” and together with the Preliminary Prospectus, the “Prospectus”) in connection with the offering and sale by the Company of the Securities; (iv) the Indenture; (v) the form of the Securities and (vi) such other corporate records, certificates and other documents and such matters of law, in each case, as we have deemed necessary or appropriate.

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In rendering this opinion, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to authentic original documents of all documents submitted to us as copies and the legal capacity of all individuals executing such documents. As to any facts material to this opinion which we did not independently establish or verify, we have, with your consent, relied upon the statements, certificates and representations of the public officials, officers of the Company and other representatives of parties to the Indenture and the Securities. We have also assumed the valid authorization, execution and delivery of the Indenture and the Securities by each party thereto, and we have assumed that each such party (in the case of parties which are not natural persons) has been duly organized and is validly existing and in good standing under its jurisdiction of organization, that each such party has the legal capacity, power and authority to perform its obligations thereunder and that each of the Indenture and the Securities constitutes the valid and binding obligation of all such other parties, enforceable against them in accordance with its terms.

Based upon the foregoing and subject to the qualifications, assumptions and limitations stated herein, we are of the opinion that the Securities constitute a valid and legally binding obligation of the Company, enforceable against the Company in accordance with their terms.

The opinion set forth above is subject to the effects of (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar laws relating to or affecting creditors’ rights generally, (ii) general equitable principles (whether considered in a proceeding in equity or at law) and (iii) an implied covenant of good faith and fair dealing.

We express no opinion as to whether, or the extent to which, the laws of any particular jurisdiction apply to the subject matter hereof, including, without limitation, the enforceability of the governing law provision contained in any Securities or in any agreement and we express no opinion as to the enforceability of any indemnification or contribution provisions contained in any agreement insofar as enforcement of these provisions may be limited by applicable federal securities laws or principles of public policy.

We are members of the Bar of the State of New York, and we have not considered, and we express no opinion as to, the laws of any jurisdiction other than the laws of the State of New York that a New York lawyer exercising customary professional diligence would reasonably be expected to recognize as being applicable to the Company, the Transaction Documents or the transactions governed by the Transaction Documents, in each case as in effect on the date hereof (the “Relevant Laws”). Without limiting the generality of the foregoing definition of Relevant Laws, the term “Relevant Law” does not include any law, rule or regulation that is applicable to the Company and the Transaction Documents or such transactions solely because such law, rule or regulation is part of a regulatory regime applicable to any party to any of the Transaction Documents or any of its affiliates due to the specific assets or business of such party or such affiliate.

Insofar as the opinions expressed herein relate to or are dependent upon matters governed by the laws of the Commonwealth of Virginia, we have relied upon the opinion dated the date hereof of Williams Mullen.

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We hereby consent to the filing of this opinion as Exhibit 5.1 to the Company’s Current Report on Form 8-K filed with the Commission on the date hereof and to the reference to us under the caption “Validity of the Notes” in the Prospectus that forms a part of the Registration Statement. In giving such consent, we do not thereby admit that we are an expert within the meaning of Section 7 of the Securities Act. We assume no obligation to advise the Company or any other person, or to make any investigations, as to any legal developments or factual matters arising subsequent to the date hereof that might affect the opinions expressed herein.