8-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 30, 2005

CSX CORPORATION

(Exact name of registrant as specified in its charter)

Virginia

(State or other jurisdiction of

incorporation or organization)

1-8022	62-1051971
(Commission File No.)	(I.R.S. Employer Identification No.)

500 Water Street, 15^th Floor, Jacksonville, FL 32202

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:

(904) 359-3200

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(e) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure.

On September 30, 2005, CSX Corporation issued a press release announcing that the company had notified holders of its Zero Coupon Convertible Debentures due October 30, 2021 of the company’s obligation to purchase on October 30, 2005 some or all of the Debentures for $852.48 per $1,000 principal amount at maturity of the Debentures in the circumstances described in the notice.

A copy of the press release is included with this report as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

(c) Exhibits. The following exhibit is furnished as part of this report.

99.1 Press Release dated September 30, 2005

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Signature

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

CSX CORPORATION
By:	/s/ DAVID A. BOOR
	David A. Boor
	Vice President and Treasurer

Date: September 30, 2005

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EXHIBIT LIST

Exhibit	Description
99.1	Press Release dated September 30, 2005

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EX-99.1

Exhibit 99.1

Media Contact:	Misty Skipper
	(904) 366-2949
Investor Contact:	David Baggs
	(904) 366-2949

CSX CORPORATION ANNOUNCES NOTICE OF PURCHASE OPTION

FOR CONVERTIBLE DEBENTURES

JACKSONVILLE, Fla., Sept. 30, 2005 – CSX Corporation (NYSE: CSX) today announced that it has notified holders of its Zero Coupon Convertible Debentures Due 2021 of the company’s obligation to purchase any of the debentures for $852.48 per $1,000 principal amount at maturity of the debentures that are properly delivered to the company and not withdrawn before 5 p.m., Eastern time, Oct. 27, 2005. If the debentures are required to be purchased by CSX, they will be purchased for cash, paid promptly following the later of Oct. 30, 2005, or the book-entry transfer of the debentures to JPMorgan Chase Bank, N.A., as trustee for the debentures. The procedures that holders must follow in electing to require CSX to purchase their debentures are set forth in the debentures and have been provided in a notice delivered to holders through The Depository Trust Company by the trustee. A copy of the notice is also posted at the company’s website, www.csx.com.

CSX Corporation, based in Jacksonville, Fla., owns companies providing rail, intermodal and rail-to-truck transload services that are among the nation’s leading transportation companies, connecting more than 70 river, ocean and lake ports, as well as more than 230 short line railroads. Its principal operating company, CSX Transportation Inc., operates the largest railroad in the eastern United States with a 22,000-mile rail network linking commercial markets in 23 states, the District of Columbia, and two Canadian provinces. CSX Intermodal is a stand-alone integrated intermodal company, serving customers with its own truck and terminal operations plus a dedicated domestic container fleet. More information about CSX Corporation and its subsidiaries is available at the company’s website, www.csx.com.

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