UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.    )

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AMERICAN TOWER CORPORATION

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Annual Meeting of Stockholders to Be Held on May 31, 2017.

AMERICAN TOWER CORPORATION

        

        116 HUNTINGTON AVENUE

        BOSTON, MASSACHUSETTS 02116

Meeting Information
Meeting Type:	Annual Meeting
For holders as of:	April 5, 2017
Date: May 31, 2017	Time: 11:00 AM local time
Location:  Boston Marriott Copley Place
Tremont Conference Room
110 Huntington Avenue
Boston, MA 02116

You are receiving this communication because you hold shares in the company named above.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENT            ANNUAL REPORT/FORM 10-K How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
1) BY INTERNET:	www.proxyvote.com
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— How To Vote —

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          Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.   Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.   Vote By Phone: You can vote by telephone by requesting a paper copy of the materials, which will include a proxy card containing a toll-free telephone number.   Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.  

Voting Items

The Board of Directors recommends you vote FOR the following:
1.	Election of Directors

Nominees:
1a. 1b. 1c. 1d. 1e. 1f. 1g. 1h. 1i.	Gustavo Lara Cantu Raymond P. Dolan Robert D. Hormats Craig Macnab JoAnn A. Reed Pamela D.A. Reeve David E. Sharbutt James D. Taiclet, Jr. Samme L. Thompson

The Board of Directors recommends you vote FOR proposals 2 and 3:

2. To ratify the selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for 2017.

3. To approve, on an advisory basis, the Company’s executive compensation.

The Board of Directors recommends you vote 1 YEAR on the following proposal:

4. To vote, on an advisory basis, on the frequency with which the Company will hold a stockholder advisory vote on executive compensation.

NOTE: To transact such other business as may properly come before the annual meeting or any adjournments or postponements thereof.