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1933 Act Rule 497(e)

1933 Act File No. 333-40455

1940 Act File No. 811-08495

July 12, 2013

VIA EDGAR

Filing Desk

U.S. Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re: Nationwide Mutual Funds (the “Registrant”)

SEC File Nos. 333-40455 and 811-08495

Rule 497(e) filing

Ladies and Gentlemen:

Enclosed for filing pursuant to Rule 497(e) under the Securities Act of 1933, as amended, (the “1933 Act”) are exhibits containing interactive data format risk/return summary information that reflects the risk/return summary information in the Prospectus dated June 27, 2013, relating to the Nationwide Ziegler Wisconsin Tax Exempt Fund, a series of the Registrant, as filed pursuant to Rule 497(e) under the 1933 Act on June 27, 2013 (Accession Number: 0001193125-13-274706).

Please direct questions or comments relating to this filing to me at the above-referenced telephone number.

Very truly yours,

/s/ Cillian M. Lynch

Cillian M. Lynch