UNITED STATES
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 7, 2005

KOMAG, INCORPORATED
__________________________________________
(Exact name of registrant as specified in its charter)

Delaware	0-16852	94-2914864
_____________________ (State or other jurisdiction	_____________ (Commission	______________ (I.R.S. Employer
of incorporation)	File Number)	Identification No.)
1710 Automation Parkway, San Jose, California		95131
_________________________________ (Address of principal executive offices)		___________ (Zip Code)

Registrant’s telephone number, including area code: 408-576-2000

Not Applicable
______________________________________________
Former name or former address, if changed since last report

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(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure.

Komag, Incorporated (the "Company") previously announced it will be presenting at the following investor conference:

*Citigroup 12th Annual Global Technology Conference in New York, New York
September 8, 2005 at 6:20 a.m. PDT / 9:20 a.m. EDT

Live and archived webcast of the presentation will be available on Komag’s website at http://www.komag.com/investors/ir_webcasts_events.html.

At the investment conference, the Company’s executives expect to provide updates regarding conditions in the hard disk industry. Specifically, the Company expects to make the following comments:

The Company expects overall market demand to remain strong for the
industry’s traditionally seasonally stronger second half of the calendar
year.

The Company is currently running at full manufacturing capacity of
approximately 27 million disks per quarter.

The Company is currently adding new media capacity and expects some
initial incremental capacity in the fourth quarter of 2005 with total
expected capacity of 31 million disks per quarter exiting the first
quarter of 2006.

Based on strategic supply agreements with several customers, the
Company expects to continue to increase capacity in 2006 to meet
commitments to customers and to exit the fourth quarter of 2006
with total expected capacity of approximately 40 million disks per
quarter.

The Company expects total revenue in the third quarter of 2005 to
be similar to the prior quarter and net margin to approximate 16%.

This report contains forward-looking statements relating to expected market demand, levels of incremental new media capacity expected to be added by the Company in 2005 and 2006, and the Company’s expected revenue and net margin numbers for the third quarter of 2005. These statements involve known and unknown risks and uncertainties that may cause the Company’s or its industry's results, level of activity, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. These risks and uncertainties include, without limitation, the Company’s ability to achieve its operating yield, cost and profitability targets, changes in the currency exchange rate for the Malaysian ringgit as a result of the managed float system, continued customer demand and the impact of demand variation on factory utilization, the performance by the Company and its customers of their obligations under the respective increased capacity arrangements, the Company’s ability to increase its capacity, variability in demand and associated impact on average selling price of disks, the Company’s ability to satisfy customer qualification requirements and meet shipping demands, the Company’s expectation that industry unit demand will continue to grow and not decline and, the Company’s ability to produce new generation disks in volume and the other factors described in the Company’s reports filed with the Securities and Exchange Commission, including, but not limited to, its most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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 hereunto duly authorized.

	KOMAG, INCORPORATED
September 7, 2005	By:	Kathleen A. Bayless
		Name: Kathleen A. Bayless
		Title: Senior Vice President, Chief Financial Officer