Stanley Black & Decker (SWK) S-8 Registration of securities for employees

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (FormS-8) pertaining to the Deferred Compensation Plan forNon-Employee Directors of Stanley Black & Decker, Inc. of our reports dated February 15, 2017, with respect to the consolidated financial statements and schedule of Stanley Black & Decker, Inc. and subsidiaries (the “Company”) and the effectiveness of internal control over financial reporting of the Company included in its Annual Report (Form10-K) for the year ended December 31, 2016, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Hartford, Connecticut

August 15, 2017