Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated February 11, 2019, relating to (i) the consolidated financial statements (which report expresses an unqualified opinion and includes an explanatory paragraph regarding a change in accounting policy from expensing asbestos-related defense and processing costs as incurred to the accrual of asbestos-related defense and processing costs when probable of occurring and estimable and a change in the method of accounting for revenue due to the adoption of Accounting Standards Codification Topic 606, Revenue From Contracts with Customers) of The Dow Chemical Company and subsidiaries (the “Company”), and (ii) the effectiveness of the Company’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of The Dow Chemical Company for the year ended December 31, 2018.

 /S/ DELOITTE & TOUCHE LLP

 Midland, Michigan

 April 1, 2019