Nationwide Money Market Fund   Summary Prospectus March 1, 2016

Class/Ticker Prime Shares MIFXX Service Class NWSXX Institutional Class GMIXX

Before you invest, you may want to review the Fund’s Prospectus, which contains information about the Fund and its risks. The Fund’s Prospectus and Statement of Additional Information, both dated March 1, 2016, are incorporated by reference into this Summary Prospectus. For free paper or electronic copies of the Fund’s Prospectus and other information about the Fund, go to nationwide.com/mutualfundprospectuses, email a request to web_help@nationwide.com or call 800-848-0920, or ask any financial advisor, bank, or broker-dealer who offers shares of the Fund.

Objective

The Fund seeks as high a level of current income as is consistent with preserving capital and maintaining liquidity. The Fund is a money market fund that seeks to maintain a stable net asset value of $1.00 per share.

Fees and Expenses

This table describes the fees and expenses you may pay when buying and holding shares of the Fund. There are no sales charges to purchase or sell shares of the Fund.

	Prime Shares	Service Class Shares	Institutional Class Shares
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees	0.39%	0.39%	0.39%
Distribution and/or Service (12b-1) Fees	None	0.15%	None
Other Expenses	0.26%	0.26%	0.11%
Acquired Fund Fees and Expenses	0.02%	0.02%	0.02%
Total Annual Fund Operating Expenses	0.67%	0.82%	0.52%
Fee Waiver/Expense Reimbursement1	None	(0.05)%	None
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	0.67%	0.77%	0.52%

1 Nationwide Mutual Funds (the “Trust”) and Nationwide Fund Advisors (the “Adviser”) have entered into a written contract limiting annual fund operating expenses to 0.75% until February 28, 2017. Under the expense limitation agreement, the level to which operating expenses are limited applies to Service Class shares only, excluding any taxes, interest, brokerage commissions, acquired fund fees and expenses, short-sale dividend expenses, other expenses which are capitalized in accordance with generally accepted accounting principles and expenses incurred by the Fund in connection with any merger or reorganization, and may exclude other nonroutine expenses not incurred in the ordinary course of the Fund’s business. The expense limitation agreement may be changed or eliminated only with the consent of the Board of Trustees of the Trust. The Trust is authorized to reimburse the Adviser for management fees previously waived and/or for expenses previously paid by the Adviser, provided, however, that any reimbursements must be paid at a date not more than three years after the fiscal year in which the Adviser waived the fees or reimbursed the expenses and the reimbursements do not cause the Fund to exceed the expense limitation that was in place at the time the Adviser waived the fees or reimbursed the expenses, or the current expense limitation, if different.

SP-MMKT (3/16)

Summary Prospectus March 1, 2016 1 Nationwide Money Market Fund

Example

This Example is intended to help you to compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. It assumes a 5% return each year and no change in expenses. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	1 Year		3 Years		5 Years		10 Years
Prime shares		$68		$214		$373		$835
Service Class shares		79		257		450		1,009
Institutional Class shares		53		167		291		653

Principal Investment Strategies

The Fund invests primarily in a portfolio of high-quality, fixed-income securities that mature in 397 days or less. These securities generally are issued by banks, corporations and the U.S. government, and may include asset-backed securities, shares of other money market mutual funds, and obligations of states, municipalities and foreign governments. The Fund may purchase foreign money market securities, although all obligations held by the Fund must be denominated in U.S. dollars. The Fund may invest in floating-and variable-rate obligations and may enter into repurchase agreements. The Fund maintains a dollar-weighted average maturity of no more than 60 days and a weighted average life of no more than 120 days.

Effective October 14, 2016, the Fund will invest at least 99.5% of its total assets in (1) securities that are issued by the U.S. government, its agencies or instrumentalities, (2) repurchase agreements that are collateralized fully by such securities, or (3) other Government Money Market Funds, as such term is defined in Rule 2a-7 of the Investment Company Act of 1940, as amended.

Because the Fund invests in short-term securities, the Fund’s subadviser generally sells securities only to meet liquidity needs, to maintain target allocations or to take advantage of more favorable opportunities.

Principal Risks

While the Fund seeks to preserve capital, there can be no guarantee that the Fund will meet its objective or be able to maintain a fixed net asset value of $1.00 per share; therefore, you could lose money.

There is no guarantee that the Fund will provide a certain level of income or that any such income will stay ahead of inflation. Further, the Fund’s yield will vary; it is not fixed for a specific period like the yield on a bank certificate of deposit. A low interest rate environment may prevent the Fund from providing a positive yield or from paying Fund expenses out of current income without impairing the Fund’s ability to maintain a stable net asset value.

Investments in the Fund are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Other risks of investing in the Fund include:

Interest rate risk – generally, when interest rates go up, the value of fixed-income securities goes down. Prices of longer-term securities generally change more in response to interest rate changes than prices of shorter-term securities. To the extent

the Fund invests a substantial portion of its assets in fixed-income securities with longer-term maturities, rising interest rates may cause the value of the Fund’s investments to decline significantly. Currently, interest rates are at or near historic lows, which may increase the Fund’s exposure to the risks associated with rising interest rates.

Credit risk – an issuer may be unable to pay the interest or principal when due. If an issuer defaults, the Fund may lose money. Changes in a bond issuer’s credit rating or the market’s perception of an issuer’s creditworthiness also may affect the value of a bond.

Market and selection risks – market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Selection risk is the risk that the securities selected by the Fund’s management will underperform the markets, the relevant indices or the securities selected by other funds with similar investment objectives and investment strategies. This means you may lose money.

Liquidity risk – when there is little or no active trading market for specific types of securities or instruments, it can become more difficult to sell the securities or instruments at or near their perceived value. An inability to sell a portfolio position can adversely affect a Fund’s value or prevent the Fund from being able to take advantage of other investment opportunities. Liquidity risk also includes the risk that the Fund will experience significant net redemptions of its shares at a time when it cannot find willing buyers for its portfolio securities or can only sell its portfolio securities at a material loss. To meet redemption requests, the Fund may be forced to sell other securities or instruments that are more liquid, but at unfavorable times and conditions.

Asset-backed securities risk – asset-backed securities generally are subject to the same types of risk that apply to other fixed-income securities, such as interest rate risk and credit risk. The credit quality of most asset-backed securities depends primarily on the credit quality of the assets underlying such securities, how well the entity issuing the security is insulated from the credit risk of the originator or any other affiliated entities, and the amount and quality of any credit enhancement of the securities.

Repurchase agreements risk – exposes the Fund to the risk that the party that sells the securities to the Fund may default on its obligation to repurchase them.

Foreign securities risk – foreign securities may be more volatile, harder to price and less liquid than U.S. securities. The price of foreign securities may be further affected by other factors, such as changes in the exchange rates between the U.S. dollar and the currencies in which the securities are traded.

Investments in other money market mutual funds – to the extent that the Fund invests in shares of other money market

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mutual funds, its performance is directly tied to the performance of such other funds. If one of these other money market mutual funds fails to meet its objective, the Fund’s performance could be negatively affected. In addition, Fund shareholders will pay a proportionate share of the fees and expenses of such other money market mutual fund (including applicable management, administration and custodian fees) as well as the Fund’s direct expenses. Any such other money market mutual fund will not charge any front-end sales loads, contingent deferred sales charges or Rule 12b-1 fees.

Regulatory risk – On July 23, 2014, the SEC adopted amendments to money market fund regulations, which structurally change the way that certain money market funds will be required to operate. These amendments generally are not effective until October 14, 2016, but when implemented will affect the Fund’s operations and may affect the Fund’s return potential.

Loss of money is a risk of investing in the Fund.

Performance

The following bar chart and table can help you evaluate the Fund’s potential risks. The bar chart shows how the Fund’s annual total returns have varied from year to year. The table compares the Fund’s average annual total returns to the returns of a broad-based securities index. Remember, however, that past performance is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available at no cost by visiting nationwide.com/mutualfunds or by calling 800-848-0920.

Please call 800-848-0920 for the Fund’s current 7-day yield.

Annual Total Returns – Prime Shares

(Years Ended December 31,)

Best Quarter:    1.24% – 3rd qtr. of 2007

Worst Quarter:    0.00% – 2nd qtr. of 2009

Average Annual Total Returns

For the Periods Ended December 31, 2015:

	1 Year		5 Years		10 Years
Prime shares		0.00%		0.00%		1.14%
Service Class shares		0.00%		0.00%		1.10%
Institutional Class shares		0.00%		0.00%		1.16%
iMoneyNet Prime Retail Index (The Index does not pay sales charges, fees, expenses or taxes.)		0.00%		0.46%		1.46%

Portfolio Management

Investment Adviser

Nationwide Fund Advisors

Subadviser

Federated Investment Management Company (“Federated”)

Purchase and Sale of Fund Shares

Minimum Initial Investment

Prime Shares: $2,000

Service Class Shares: $50,000

Institutional Class: $1,000,000

Automatic Asset Accumulation Plan (Prime Shares): $0*

* Provided each monthly purchase is at least $50

Minimum Additional Investment

Prime Shares: $100

Service Class Shares, Institutional Class: no minimum

Automatic Asset Accumulation Plan (Prime Shares): $50

In general, you can buy or sell (redeem) shares of the Fund by mail or phone on any business day. You can generally pay for shares by check or wire.

To Place Orders to Purchase and Sell (Redeem) Fund Shares
Mail: Nationwide Funds P.O. Box 701, Milwaukee, WI 53201-0701	Overnight: Nationwide Funds 615 East Michigan Street, Third Floor, Milwaukee, WI 53202	Website: nationwide.com/ mutualfunds
Phone: 800-848-0920 (toll free). Representatives are available 9 a.m. – 8 p.m. Eastern time, Monday through Friday.

Tax Information

The Fund’s distributions are taxable, and generally will be taxed as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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