Additional Proxy Soliciting Materials (definitive) (defa14a)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. )

Filed by the Registrant x

Filed by a Party other than the Registrant ¨

Check the appropriate box:




¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Pursuant to §240.14a-12

Crown Castle International Corp.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):


x	No fee required.


¨	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.


(1)	Title of each class of securities to which transaction applies:


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(3)	Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):


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¨	Fee paid previously with preliminary materials.


¨	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.


(1)	Amount previously paid:


(2)	Form, Schedule or Registration Statement No.:


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(4)	Date Filed:

*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on May 18, 2017.



CROWN CASTLE INTERNATIONAL CORP.				Meeting Information
				Meeting Type: Annual Meeting For holders as of: March 27, 2017 Date: May 18, 2017 Time: 9:00 a.m., CDT Location: Marriott Marquis Houston 1777 Walker Street Houston,TX 77010
1220 AUGUSTA DRIVE HOUSTON, TX 77057				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.co m 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.
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— Before You Vote —

How to Access the Proxy Materials



Proxy Materials Available to VIEW or RECEIVE:

NOTICE AND PROXY STATEMENT		FORM 10-K

How to View Online: Have the information that is printed in the box marked by the arrow à XXXX XXXX XXXX XXXX (located on the following page) and visit: ww w.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 : ww w.proxyvote.com 2) BY TELEPHONE : 1-800-579-1639 3) BY E-MAIL* : sendmaterial@p roxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow à XXXX XXXX XXXX XXXX (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 4, 2017 to facilitate timely delivery.

— How To Vote —

Please Choose One of the Following Voting Methods



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 ww w.proxyvote.com. Have the information that is printed in the box marked by the arrow à XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

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Voting Items
The Board of Directors recommends you vote FOR each of the nominees in Proposal 1:
1. Election of Directors
Nominees
1a. P. Robert Bartolo			1g. Edward C. Hutcheson, Jr.
1b. Jay A. Brown			1h. J. Landis Martin
1c. Cindy Christy			1i. Robert F. McKenzie
1d. Ari Q. Fitzgerald			1j. Anthony J. Melone
1e. Robert F. Garrison II			1k. W. Benjamin Moreland
1f. Lee W. Hogan

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


2.	The ratification of the appointment of PricewaterhouseCoopers LLP as the Company's independent registered public accountants for fiscal year 2017.

3. The non-binding, advisory vote regarding the compensation of the Company's named executive officers.

The Board of Directors recommends you vote AGAINST Proposal 4:


4.	A stockholder proposal regarding proxy access, if properly presented.

NOTE: Also includes authorization of the named proxies to vote in their discretion upon such other business as may properly come before the meeting or any adjournment or postponement thereof.

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