NATIONWIDE MUTUAL FUNDS

Nationwide Bailard Cognitive Value Fund

Nationwide Bailard Technology & Science Fund

Nationwide Fund

Nationwide Geneva Mid Cap Growth Fund

Nationwide Geneva Small Cap Growth Fund

Nationwide Growth Fund

Nationwide HighMark Large Cap Core Equity Fund

Nationwide HighMark Small Cap Core Fund

Nationwide Small Company Growth Fund

Nationwide U.S. Small Cap Value Fund

Nationwide Ziegler Equity Income Fund

Supplement dated February 16, 2017

to the Prospectus dated March 1, 2016

Capitalized terms and certain other terms used in this supplement, unless otherwise defined in this supplement, have the meanings assigned to them in the Prospectus.

Nationwide Geneva Mid Cap Growth Fund and Nationwide Geneva Small Cap Growth Fund

Effective immediately, all references to, and information regarding, Michelle Picard in the Prospectus are hereby deleted in their entirety.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE