UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.     )

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United Natural Foods, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on December 18, 2018. UNITED NATURAL FOODS, INC. XXXX XXXX XXXX XXXX (located on the following page). You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com, scan the QR Barcode on the reverse side, or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. proxy materials and voting instructions. E52779-P14092 See the reverse side of this notice to obtain Meeting Information Meeting Type: Annual Meeting For holders as of: October 23, 2018 Date: December 18, 2018 Time: 4:00 PM EST Location: Meeting live via the Internet-please visit www.virtualshareholdermeeting.com/unfi2018. The company will be hosting the meeting live via the Internet this year. To attend the meeting via the Internet please visit www.virtualshareholdermeeting.com/unfi2018 and be sure to have the information that is printed in the box marked by the arrow

Before You Vote How to Access the Proxy Materials Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) XXXX XXXX XXXX XXXX (located on the following page) in the subject line . VIEW MATERIALS & VOTE  SCAN TO How To Vote Please Choose One of the Following Voting Methods box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. E52780-P14092 Vote By Internet: Before The Meeting: Go to www.proxyvote.com or from a smartphone, scan the QR Barcode above. Have the information that is printed in the During The Meeting: Go to www.virtualshareholdermeeting.com/unfi2018. Have the information that is printed in the box marked by the arrow Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENT2018 ANNUAL REPORT TO STOCKHOLDERSFORM 10-K How to View Online: and visit: www.proxyvote .com, or scan the QR Barcode below. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET:www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*:sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before December 4, 2018 to facilitate timely delivery.

The Board of Directors recommends you vote FOR the following proposals: 1. Election of eight nominees as directors to serve until the 2019 annual meeting of stockholders. 3.To approve, on an advisory basis, our executive compensation. 1a. Eric F. Artz NOTE: Also includes authorization to vote on 1b. Ann Torre Bates any other matters that may properly come before the meeting or any adjournment or postponement thereof. 1c. Denise M. Clark 1d. Daphne J. Dufresne 1e. Michael S. Funk 1f. James P. Heffernan 1g. Peter A. Roy 1h. Steven L. Spinner 2. Ratification of the selection of KPMG LLP as our independent registered public accounting firm for the fiscal year ending August 3, 2019. E52781-P14092 Voting Items

E52782-P14092 Voting Instructions