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 9, 2017, relating to (i) the consolidated financial statements and financial statement schedule (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) 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, 2016.

/S/ DELOITTE & TOUCHE LLP

Midland, Michigan

September 1, 2017