Lincoln Electric (LECO) 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 (Form S-8) pertaining to The Lincoln Electric Company Restoration Plan of Lincoln Electric Holdings, Inc. and subsidiaries, of our reports dated February 24, 2016, with respect to the consolidated financial statements and schedule of Lincoln Electric Holdings, Inc. and subsidiaries, and the effectiveness of internal control over financial reporting of Lincoln Electric Holdings, Inc. and subsidiaries, included in its Annual Report (Form 10-K) for the year ended December 31, 2015, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Cleveland, Ohio

December 19, 2016