6-K

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March, 2015

Commission File Number 001-35767

RIO ALTO MINING LIMITED
(Translation of registrant’s name into English)

Suite 1950 – 400 Burrard Street
Vancouver, BC V6C 3A6
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [   ] Form 40-F [ X ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [   ]

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [   ]

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

Exhibit
99.1	News Release dated March 16, 2015

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

			Rio Alto Mining Limited
			(Registrant)
Date:	March 16, 2015	By:	/s/ Alexander Black
		Name:	Alexander Black
		Title:	CEO & President

SEC 1815 (04-09) Persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

EX-99.1

Exhibit 99.1

RIO ALTO ANNOUNCES NET INCOME OF US$49.8 MILLION FOR 2014

For Immediate Release March 16, 2015

Rio Alto Mining Limited (“Rio Alto” or the “Company”) (TSX & BVL: RIO, NYSE: RIOM) announces that, for 2014, net income amounted to $49.8 million or $0.21 per share and that cash flow from operations was $110.9 million.

Highlights for the quarter ended December 31, 2014 included:

• Net income amounted to $1.5 million, or $0.00 per share.  The recognition of final income tax adjustments occurred in Q4, and therefore resulted in a lower net income for the quarter ended December 31, 2014.

• Net cash provided by operations was $39.2 million.

• Gold produced and sold was 57,908 ounces which were sold at an average realized price of $1,192 per ounce.

• World Gold Council (“WGC”) adjusted operating costs per ounce of gold sold during the quarter were $549 per ounce.

• WGC all-in sustaining costs per ounce of gold sold were $760 per ounce.

• WGC all-in costs per ounce of gold sold were $819 per ounce.

Highlights for the year ended December 31, 2014 included:

• Net income amounted to $49.8 million, or $0.21 per share.

• Net cash provided by operations was $110.9 million.
• Gold produced and sold was 222,255 ounces, of which 209,350 ounces were sold at an average realized price of $1,251 per ounce.

• WGC adjusted operating costs per ounce of gold sold were $576 per ounce.

• WGC all-in sustaining costs per ounce of gold sold were $772 per ounce.

• WGC all-in costs per ounce of gold sold were $879 per ounce.

• On August 5, 2014, the Company completed the acquisition of Sulliden Gold Corporation Ltd. The main asset acquired was the Shahuindo Gold Project.

• Cash of $65.1 million was invested in capital, $4.8 million in exploration activities and $47.9 million to complete the Shahuindo acquisition.

• On July 4, 2014, the Company received funds of $35 million from a loan with BCP Banco de Credito del Peru (“BCP”).

Subsequent to December 31, 2014, the Company and Tahoe Resources Inc. announced that they have entered into a definitive agreement to combine their respective businesses and create a new, leading intermediate precious metals producer.

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“I am very pleased with the Company’s operational and financial performance for 2014. The net cash generated from operations during Q4 of $39.2 million was an outstanding result. Our focused management team at La Arena has been able to deliver costs at, or below our low end of guidance and comfortably exceeded our high end of gold production guidance. The board of directors would like to express its appreciation for the commitment and effort of everyone involved in the operation of the La Arena Gold Mine and look forward to the same team executing and delivering the timely development of the Shahuindo Gold Project in 2015,” commented Alex Black, President & CEO.

The Company has filed its annual report on Form 40-F with the U.S. Securities and Exchange Commission, consisting of the Company's 2014 Annual Audited Consolidated Financial Statements, Management's Discussion and Analysis and Annual Information Form ("AIF"). These filings are available for viewing and retrieval at www.sec.gov. The AIF and the 2014 Annual Audited Consolidated Financial Statements and Management’s Discussion and Analysis have also been filed by the Company with the applicable Canadian regulatory bodies and are available for viewing and retrieval through Sedar at www.sedar.com.

The Company’s annual filings are also available on the Company’s website at www.rioaltomining.com.

Hard copies of the annual Audited Consolidated Financial Statements and accompanying notes are available, free of charge, to shareholders upon written request.

To learn more about Rio Alto Mining Limited, please visit: www.rioaltomining.com or Rio Alto’s SEDAR profile at www.sedar.com.

Cautionary Notes

Rio Alto has included certain non-Generally Accepted Accounting Principles ("GAAP") financial measures in this press release, including WGC adjusted operating costs, WGC all-in sustaining costs, and WGC all-in costs. Rio Alto has prepared and presented these non-GAAP measures with comparative periods restated accordingly. These measures are prepared on the basis of ounces of gold sold. Under the WGC guidance, all-in sustaining costs include total production cash costs incurred at mining operations, sustaining capital expenditures, corporate administrative expense, stock-based compensation expense, exploration and evaluation costs, and reclamation cost accretion. In addition, the WGC guidance for all-in costs includes non-sustaining capital, non-cash costs and other expenditures not necessary to sustain current activities. These non-GAAP measures should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. These non-GAAP measures are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. Although the WGC has published its definitions, other companies may prepare these measures differently. For a more detailed discussion of these Non-GAAP measures, please refer to the Company's Annual Management Discussion & Analysis.

ON BEHALF OF RIO ALTO MINING LIMITED

Kathryn Johnson

Chief Financial Officer

FOR FURTHER INFORMATION, CONTACT:

Kathryn Johnson, Chief Financial Officer

Phone: 604.628.1401

Fax: 866.393.4493

Email: kathrynj@rioaltomining.com

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Alejandra Gomez, VP Corporate Communications

Phone: 604.628.1401

Fax: 866.393.4493

Email: alejandrag@rioaltomining.com

Web: www.rioaltomining.com