Mutual Fund Summary Prospectus (497k)


		Summary Prospectus February 3, 2014, Revised as of April 1, 2014

MassMutual Premier Funds

MassMutual Premier Disciplined Growth Fund

Ticker: Class I–MPDIX, Class R5–MPGSX, Service Class–DEIGX, Administrative Class–MPGLX,

Class A–MPGAX, Class R4–MPDGX, Class R3–MPDRX

Before you invest, you may want to review the Fund’s prospectus, which contains more information about the Fund and its risks. You can find the Fund’s prospectus and other information about the Fund online at www.massmutual.com/funds. You can also get this information at no cost by calling 1-888-309-3539 or by sending an email request to fundinfo@massmutual.com.

INVESTMENT OBJECTIVE

This Fund seeks to outperform the total return performance of its benchmark index, the Russell 1000 ^® Growth Index*, while maintaining risk characteristics similar to those of the benchmark.

FEES AND EXPENSES OF THE FUND

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. For Class A shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in MassMutual funds. More information about these and other discounts is available in the section titled Sales Charges by Class on page 116 of the Fund’s Prospectus or from your financial professional.

* The Fund is not promoted, sponsored, or endorsed by, nor in any way affiliated with Russell Investment Group (“Russell”). Russell is not responsible for and has not reviewed the Fund nor any associated literature or publications and Russell makes no representation or warranty, express or implied, as to their accuracy, or completeness, or otherwise. The Russell 1000 ^® Growth Index and Russell ^® are trademarks of the Frank Russell Company.

Shareholder Fees (fees paid directly from your investment)

Class I

Class R5

Service
Class

Admini-
strative
Class

Class A

Class R4

Class R3

Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price)

None

5.75%

None

Maximum Deferred Sales Charge (Load) (as a % of the lower of the original offering price or redemption proceeds)

None

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)


	Class I	Class R5	Service Class	Admini- strative Class	Class A	Class R4	Class R3
Management Fees ⁽¹⁾	.45%	.45%	.45%	.45%	.45%	.45%	.45%
Distribution and Service (Rule 12b-1) Fees	None	None	None	None	.25%	.25%	.50%
Other Expenses ⁽¹⁾	.08%	.18%	.28%	.38%	.38%	.28%	.28%
Total Annual Fund Operating Expenses	.53%	.63%	.73%	.83%	1.08%	.98%	1.23%

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Management Fees and Other Expenses have been restated to reflect current fees.

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Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in each share class of the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. For Class A shares, the example includes the initial sales charge. The example also assumes that your investment earns a 5% return each year and that the Fund’s operating expenses are exactly as described in the preceding table. 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
Class I	$	54	$	170	$	296	$	665
Class R5	$	64	$	202	$	351	$	786
Service Class	$	75	$	233	$	406	$	906
Administrative Class	$	85	$	265	$	460	$	1,025
Class A	$	679	$	899	$	1,136	$	1,816
Class R4	$	100	$	312	$	542	$	1,201
Class R3	$	125	$	390	$	676	$	1,489

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 153% of the average value of its portfolio.

INVESTMENTS, RISKS, AND PERFORMANCE

Principal Investment Strategies

Under normal circumstances, the Fund invests substantially all (but no less than 80%) of its net assets in common stocks of companies whose market capitalizations at the time of purchase are within the market capitalization range of companies included within the Russell 1000 Growth Index (“Index”) (as of December 31, 2013, $1.27 billion to $504.48 billion). The Index is an unmanaged index that contains those stocks with a greater than average growth orientation among the stocks of the 1000 largest U.S. companies based on total market capitalization. The Fund may use futures contracts as a substitute for direct investments. Use of derivatives by the Fund may create investment leverage.

The Fund’s subadviser, Babson Capital Management LLC (“Babson Capital”), employs quantitative analysis to identify stocks included within the Index that it believes may have the potential to outperform the Index, using a proprietary model that ranks all stocks within the Index based on factors such as a company’s valuation, earnings quality, stock price momentum, and earnings improvement. Based on these rankings, Babson Capital seeks to construct a broadly diversified portfolio that it believes may have the potential to produce higher returns than the Index while maintaining risk characteristics similar to the Index. Babson Capital will typically adjust Index weights to: (1) overweight high-ranking stocks, (2) underweight low-ranking stocks (or not hold them at all), and (3) market weight stocks that do not have particularly high or low rankings. Babson Capital may also consider stocks not included in the Index but with similar market capitalizations. Babson Capital does not use market timing or macro economic forecasting in constructing the Fund’s portfolio.

The Fund expects that it will engage in active and frequent trading and so will typically have a relatively high portfolio turnover rate.

Principal Risks

The following are the Principal Risks of the Fund. You have the potential to make money by investing in the Fund, but you can also lose money.

Cash Position Risk The ability of the Fund to meet its objective may be limited to the extent that it holds assets in cash or otherwise uninvested.

Credit Risk The Fund is subject to the risk that the issuer of an investment held by the Fund or the counterparty to a transaction entered into by the Fund will be unable or unwilling to honor its obligations.

Derivatives Risk Derivatives involve risks different from, and potentially greater than, direct investments, including risks of imperfect correlation between the value of derivatives and underlying assets, counterparty default, potential losses that partially or completely offset gains, and illiquidity. Derivatives can create investment leverage and be highly volatile. Derivatives may result in losses greater than the amount invested. If the value of a derivative does not correlate well with the particular market or asset class the derivative is designed to provide exposure to, the derivative may not have the effect anticipated. Many derivatives are traded in the over-the-counter market and not on exchanges.

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Frequent Trading/Portfolio Turnover Risk Portfolio turnover generally involves some expense to the Fund and may result in the realization of taxable capital gains (including short-term gains). The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performances.

Growth Company Risk The prices of growth securities are often more sensitive to market fluctuations because of their heavy dependence on future earnings expectations, and can be more volatile than the market in general.

Indexing Risk The Fund’s performance may not track the performance of the index exactly due to a number of factors, including fees and expenses of the Fund, and the Fund’s cash positions.

Liquidity Risk Certain securities may be difficult (or impossible) to sell or positions difficult to close out at a desirable time and price, and the Fund may be required to hold an investment that is declining in value or be prevented from realizing capital gains.

Management Risk The Fund relies on the manager’s ability to achieve its investment objective. There can be no assurance that the Fund will achieve the desired results and the Fund may incur significant losses.

Market Risk The value of the Fund’s portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock market prices in general may decline over short or extended periods, subjecting the Fund to unpredictable declines in the value of its shares and poor performance. The Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.

Valuation Risk The Fund is subject to the risk of mispricing or improper valuation of its investments, in particular to the extent that its securities are fair valued.

Performance Information

The following bar chart and table provide some indication of the risks of investing in the Fund. The

bar chart shows changes in the Fund’s performance from year to year for Service Class shares. The table shows how the Fund’s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance. Performance for Class R5, Administrative Class, and Class A shares of the Fund for periods prior to their inception date (11/01/04) is based on the performance of Service Class shares, adjusted for Administrative Class and Class A shares to reflect Administrative Class and Class A expenses, respectively, and for Class A shares to reflect any applicable sales charge. Performance for Class I, Class R4, and Class R3 shares of the Fund for periods prior to their inception date (04/01/14) is based on the performance of Class R5 shares, adjusted for Class R4 and Class R3 shares to reflect Class R4 and Class R3 expenses, respectively. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More up-to-date performance information is available at http://www.massmutual.com/funds or by calling 1-888-309-3539 .

Annual Performance

Service Class Shares

LOGO

Highest Quarter:

2Q ’09,

15.54%

Lowest Quarter:

4Q ’08,

-22.45%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Service Class only. After-tax returns for other classes will vary.

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Average Annual Total Returns

(For the periods ended December 31, 2013)


		One Year		Five Years		Ten Years
Service Class	Return Before Taxes		35.51%		20.42%		7.91%

	Return After Taxes on Distributions		26.95%		18.69%		6.99%

	Return After Taxes on Distributions and Sale of Fund Shares		22.35%		16.21%		6.18%

Class I	Return Before Taxes		35.72%		20.54%		7.95%
Class R5	Return Before Taxes		35.72%		20.54%		7.95%
Administrative Class	Return Before Taxes		35.38%		20.30%		7.76%
Class A	Return Before Taxes		27.35%		18.56%		6.86%
Class R4	Return Before Taxes		35.26%		20.12%		7.58%
Class R3	Return Before Taxes		34.93%		19.83%		7.31%
Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)			33.48%		20.39%		7.83%

MANAGEMENT

Investment Adviser: MML Investment Advisers, LLC

Subadviser: Babson Capital Management LLC

Portfolio Managers:

Chris C. Cao is a member of Babson Capital’s Quantitative Management Equity Team. He has managed the Fund since June 2001.

Michael F. Farrell is Head of Babson Capital’s Quantitative Equity Team. He has managed the Fund since its inception.

PURCHASE AND SALE OF FUND SHARES

Shares of the Fund are generally available to retirement plans, other institutional investors, and individual retirement accounts. Fund shares are redeemable on any business day by written request, telephone or internet (available to certain customers).

TAX INFORMATION

The Fund intends to make distributions that may be taxed as ordinary income or capital gains, unless you are an investor eligible for preferential tax treatment.

PAYMENTS TO BROKER-DEALERS AND OTHER FINANCIAL INTERMEDIARIES

If you purchase the Fund through a broker-dealer or other financial intermediary, the intermediary may receive a one-time or continuing payments from the Fund, MML Advisers or its affiliates, or others for the sale of Fund shares or continuing shareholder services provided by the intermediary. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary to recommend the Fund over another investment. You should contact your intermediary to obtain more information about the compensation it may receive in connection with your investment.

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