Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form F-3 of Suzano S.A. (“Suzano”), Suzano Austria GmbH and Fibria Overseas Finance Ltd. of our report dated April 30, 2019 relating to the consolidated financial statements of Suzano, which appears in Suzano’s Annual Report on Form 20-F for the year ended December 31, 2018. We also consent to the references to us under the heading “Experts” in such Registration Statement.

We also consent to the incorporation by reference in this Registration Statement on Form F-3 of Suzano S.A. (“Suzano”), Suzano Austria GmbH and Fibria Overseas Finance Ltd. of our report dated February 21, 2019 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting of Fibria Celulose S.A., included in Fibria Celulose S.A.’s submission on Form 6-K furnished to the SEC on February 22, 2019. We also consent to the references to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers Auditores Independentes

São Paulo, Brazil

January 24, 2019