Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Plan Administrator

Worthington Industries, Inc. Deferred Profit Sharing Plan:

We consent to the incorporation by reference in the Registration Statement (No. 033-57981 and No. 333-168421) filed on Form S-8 of Worthington Industries, Inc. and the Worthington Industries, Inc. Deferred Profit Sharing Plan of our report dated June 14, 2013, with respect to the financial statements and supplemental schedule of the Worthington Industries, Inc. Deferred Profit Sharing Plan as of and for the fiscal years ended December 31, 2012 and 2011, which report appears in the Annual Report on Form 11-K of the Worthington Industries, Inc. Deferred Profit Sharing Plan for the fiscal year ended December 31, 2012.

/s/ MEADEN & MOORE, LTD.

Certified Public Accountants

Cleveland, Ohio

June 14, 2013