Exhibit 5.1

October 30, 2019

Crocs, Inc.
7477 East Dry Creek Parkway
Niwot, Colorado 80503

Re:Registration Statement on Form S-3 Filed by Crocs, Inc.

Ladies and Gentlemen:

We have acted as counsel to Crocs, Inc., a Delaware corporation (the “Company”), in connection with the preparation and filing with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Securities Act”), and the rules and regulations promulgated thereunder, of a registration statement on Form S-3 (the “Registration Statement”) for the registration of the resale from time to time by the selling stockholders of the Company named in the Registration Statement (collectively, the “Selling Stockholders”) of up to 6,864,545 shares (the “Shares”) of common stock, par value $0.001 per share, of the Company.

In our capacity as counsel to the Company, we have examined the Registration Statement and such documents, records and instruments as we have deemed necessary for the purposes of this opinion. As to matters of fact material to the opinions expressed herein, we have relied on (a) information in public authority documents (and all opinions based on public authority documents are as of the date of such public authority documents and not as of the date of this opinion letter), and (b) information provided in certificates of officers of the Company.  We have not independently verified the facts so relied on.

In such examination, we have assumed the following without investigation: (a) the authenticity of original documents and the genuineness of all signatures; (b) the conformity to the originals of all documents submitted to us as copies; and (c) the truth, accuracy and completeness of the information, representations and warranties contained in the records, documents, instruments and certificates we have reviewed.

Based upon the foregoing examination and in reliance thereon, and subject to the assumptions stated and in reliance on statements of fact contained in the documents that we have examined, we are of the opinion that the Shares have been duly authorized by all necessary corporate action of the Company and are validly issued, fully paid and non-assessable.

The foregoing opinions are subject to the following exclusions and qualifications:

(a)Our opinions are as of the date hereof, and we have no responsibility to update this opinion for events and circumstances occurring after the date hereof or as to facts relating to prior events that are subsequently brought to our attention.  This opinion is limited to the laws, including the rules and regulations, as in effect on the date hereof, and we disavow any undertaking to advise you of any changes in law.

(b)We do not express any opinions herein concerning any laws other than the laws in their current forms of the States of Delaware and the federal securities laws of the United States of America, and we express no opinion with respect to the laws of any other jurisdiction and

expressly disclaim responsibility for advising you as to the effect, if any, that the laws of any other jurisdiction may have on the opinions set forth herein.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and any amendments thereto, including any and all post-effective amendments, and to the reference to our firm in the prospectus and any prospectus supplements relating thereto under the heading “Legal Matters.”  In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or related rules and regulations of the Commission issued thereunder.

Very truly yours,

/s/ PERKINS COIE LLP