Exhibit 5.1

November 18, 2021

Kornit Digital Ltd.

12 Ha’Amal Street

Rosh Ha’Ayin 4809246, Israel

Re: Underwritten Offering Pursuant to Prospectus Supplement

Ladies and Gentlemen:

We have acted as Israeli counsel for Kornit Digital Ltd., an Israeli company (the “Company”), in connection with an underwritten public offering by the Company, contemplating (i) the offer, issuance and sale by the Company of an aggregate of 1,940,000 ordinary shares, par value NIS 0.01 per share (“Ordinary Shares”) of the Company (the “Offering Shares”) and (ii) the potential issuance and sale by the Company of up to an additional 396,892 Ordinary Shares (the “Additional Shares” and, collectively with the Offering Shares, the “Primary Shares) that are subject to an option to purchase additional shares granted by the Company to the underwriters of the offering (the “Offering”). As part of the Offering, Amazon.com NV Investment Holdings LLC (the “Selling Shareholder”) will be offering and selling 705,953 Ordinary Shares (the “Secondary Shares”, and together with the Primary Shares, collectively, the “Shares”) issuable under a warrant, dated January 10, 2017, issued by the Company to the Selling Shareholder (the “Selling Shareholder Warrant”).

The Offering is being effected pursuant to the registration statement on Form F-3 (File No. 333-248784) (the “Registration Statement”) filed by the Company with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”) on September 14, 2020, including the prospectus contained therein, as supplemented by the preliminary prospectus supplement dated November 16, 2021 (the “Preliminary Prospectus Supplement”) and the final prospectus supplement dated November 18, 2021 (the “Final Prospectus Supplement” and, together with the Preliminary Prospectus Supplement, the “Prospectus Supplements”), in each case as filed by the Company with the SEC.

This opinion letter is rendered pursuant to Items 601(b)(5) and (b)(23) of Regulation S-K promulgated under the Securities Act.

In connection herewith, we have examined the originals, or photocopies or copies, certified or otherwise identified to our satisfaction, of: (i) the Registration Statement; (ii) the Prospectus Supplements; (iii) the underwriting agreement, dated as of November 18, 2021, by and among the Company; the Selling Shareholder; and Citigroup Global Markets Inc., Barclays Capital Inc., Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC as representatives of the underwriters named on Schedule I thereto, pursuant to which the Offering is being effected (the “Underwriting Agreement”); (iv) the articles of association of the Company, as amended and as currently in effect (the “Articles”); (v) resolutions of the board of directors of the Company (the “Board”) and a pricing committee thereof, that relate to the Registration Statement, the Prospectus Supplement and the actions to be taken in connection with the Offering; (vi) the Selling Shareholder Warrant; (vii) the Transaction Agreement, dated January 10, 2017, between the Company and Amazon.com, Inc. pursuant to which the Selling Shareholder Warrant was issued; and (viii) such other corporate records, agreements, documents and other instruments, and such certificates or comparable documents of public officials and of officers and representatives of the Company as we have deemed relevant and necessary as a basis for the opinions hereafter set forth. We have also made inquiries of such officers and representatives as we have deemed relevant and necessary as a basis for the opinions hereafter set forth.

In such examination, we have assumed the genuineness of all signatures, the legal capacity of all natural persons, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as certified, confirmed as photostatic copies and the authenticity of the originals of such latter documents. As to all questions of fact material to these opinions that have not been independently established, we have relied upon certificates or comparable documents of officers and representatives of the Company.

Based upon and subject to the foregoing, we are of the opinion that the Shares have been duly authorized, and, upon payment to the Company of (i) the consideration per Primary Share in such amount and form as is set forth in the Underwriting Agreement, and (ii) the exercise price per Secondary Share in such amount and form as is set forth in the Selling Shareholder Warrant, and when issued and sold in the Offering as described in the Prospectus Supplement, the Shares will be validly issued, fully paid and non-assessable.

Members of our firm are admitted to the Bar in the State of Israel, and we do not express any opinion as to the laws of any other jurisdiction. This opinion is limited to the matters stated herein and no opinion is implied or may be inferred beyond the matters expressly stated.

We consent to the filing of this opinion as an exhibit to the Registration Statement (as an exhibit to a Report of Foreign Private Issuer on Form 6-K that is incorporated by reference in the Registration Statement) and to the reference to our firm appearing under the caption “Legal Matters” and “Enforceability of Civil Liabilities” in the prospectus forming part of the Registration Statement. In giving this consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act, the rules and regulations of the SEC promulgated thereunder or Item 509 of the SEC’s Regulation S-K under the Securities Act.

This opinion letter is rendered as of the date hereof and we disclaim any obligation to advise you of facts, circumstances, events or developments that may be brought to our attention after the date of the Final Prospectus Supplement that may alter, affect or modify the opinions expressed herein.

Very truly yours,

/s/ Meitar Law Offices

Meitar Law Offices