Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement onForm S-3 of Olympic Steel, Inc. of our report dated February 15, 2019relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in Olympic Steel, Inc.’s Annual Report on Form10-K for the year ended December 31, 2018. We also consent to the reference to us under the heading “Experts” in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Cleveland, Ohio
May 31, 2019
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