Mutual Fund Summary Prospectus (497k)


		Summary Prospectus April 1, 2014

MassMutual Select Funds

MassMutual Select Blue Chip Growth Fund

Ticker: Class I–MBCZX, Class R5–MBCSX, Service Class–MBCYX, Administrative Class–MBCLX, Class A–MBCGX,
Class R4–MBGFX, Class R3–MBCNX

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 growth of capital over the long term.

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 127 of the Fund’s Prospectus or from your financial professional.

Shareholder Fees (fees paid directly from your investment)

Class
I

Class
R5

Service

Class

Adminis-
trative
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	Adminis- trative Class	Class A		Class R4	Class R3
Management Fees	.64%	.64%	.64%	.64%		.64%	.64%	.64%
Distribution and Service (Rule 12b-1) Fees	None	None	None	None		.25%	.25%	.50%
Other Expenses ⁽¹⁾	.04%	.14%	.24%	.34%		.34%	.24%	.24%
Total Annual Fund Operating Expenses	.68%	.78%	.88%	.98%		1.23%	1.13%	1.38%

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Other Expenses have been restated to reflect current fees.

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	$	69	$	218	$	379	$	847
Class R5	$	80	$	249	$	433	$	966
Service Class	$	90	$	281	$	488	$	1,084
Administrative Class	$	100	$	312	$	542	$	1,201
Class A	$	693	$	943	$	1,212	$	1,978
Class R4	$	115	$	359	$	622	$	1,375
Class R3	$	140	$	437	$	755	$	1,657

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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 33% of the average value of its portfolio.

INVESTMENTS, RISKS, AND PERFORMANCE

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of net assets in the common stocks of large- and medium-sized blue chip growth companies. The Fund’s subadviser, T. Rowe Price Associates, Inc. (“T. Rowe Price”), currently defines blue chip growth companies to mean firms that, in its view, are well-established in their industries and have the potential for above-average earnings growth. Equity securities may include common stocks, preferred stocks, securities convertible into common or preferred stock, rights, and warrants. While most assets will be invested in equity securities of U.S. companies, the Fund may also invest up to 20% of its total assets in foreign securities and American Depositary Receipts (“ADRs”), including emerging market securities. The Fund may hold a portion of its assets in cash or cash equivalents.

In selecting securities, T. Rowe Price generally seeks to identify companies with a leading market position, seasoned management, and strong financial fundamentals. T. Rowe Price believes that solid company fundamentals (with an emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook may potentially reward investors with strong investment performance. It is anticipated that some of the companies targeted will have good prospects for dividend growth.

In pursuing its investment objective, T. Rowe Price has the discretion to purchase some securities that do not meet its normal investment criteria, as described above, when it believes there is an opportunity for substantial appreciation (such as, for example, T. Rowe Price believes a security could increase in value as a result of a change in management, an extraordinary corporate event, a new product introduction or innovation, or a favorable competitive

development). The Fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

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.

Convertible Securities Risk Convertible securities are subject to the risks of both debt securities and equity securities. The values of convertible securities tend to decline as interest rates rise and, due to the conversion feature, tend to vary with fluctuations in the market value of the underlying common or preferred stock.

Foreign Investment Risk; Emerging Markets Risk; Currency Risk Foreign securities, including ADRs, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of the Fund’s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social, instability, greater custody and operational risks, and greater volatility in currency exchange rates. Investments in foreign currencies themselves (directly or through derivatives transactions) may be highly volatile and may create investment leverage.

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.

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.

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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.

Preferred Stock Risk Preferred stocks are subject to the risks associated with other types of equity securities, as well as additional risks, such as potentially greater volatility and risks related to deferral, non-cumulative dividends, subordination, liquidity, limited voting rights, and special redemption rights.

Sector Risk The Fund may allocate more of its assets to certain economic, market, or industry sectors than to others. This could increase the volatility of the Fund’s portfolio, and the Fund’s performance may be more susceptible to developments affecting issuers in those sectors than if the Fund invested more broadly.

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 Class R5 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 and an additional index that provides a comparison for the Fund’s returns without regard to investment style (S&P 500 Index). Performance for Class I and Class R4 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 shares to reflect Class R4 expenses. Performance for Class A shares of the Fund reflects any applicable sales charge. 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

Class R5 Shares

LOGO


Highest Quarter:			1Q ’12,				18.59%			Lowest Quarter:			4Q ’08,			-	24.74%

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 Class R5 only. After-tax returns for other classes will vary.

Average Annual Total Returns

(for the periods ended December 31, 2013)


		One Year		Five Years		Ten Years
Class R5	Return Before Taxes		41.38%		23.18%		8.18%

	Return After Taxes on Distributions		39.30%		22.80%		7.98%

	Return After Taxes on Distributions and Sale of Fund Shares		25.03%		19.11%		6.68%

Class I	Return Before Taxes		41.38%		23.18%		8.18%
Service Class	Return Before Taxes		41.34%		23.11%		8.09%
Adminis- trative Class	Return Before Taxes		41.01%		22.90%		7.92%
Class A	Return Before Taxes		32.67%		21.22%		7.04%
Class R4	Return Before Taxes		40.90%		22.76%		7.81%
Class R3	Return Before Taxes		40.30%		22.26%		7.35%
Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)			33.48%		20.39%		7.84%
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)			32.39%		17.94%		7.41%

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MANAGEMENT

Investment Adviser: MML Investment Advisers, LLC

Subadviser: T. Rowe Price Associates, Inc.

Portfolio Manager: Larry J. Puglia, CFA, CPA is a Vice President at T. Rowe Price. He has managed the Fund since February 2006.

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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