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): March 30, 2004

QLOGIC CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	0-23298	33-0537669
(State of incorporation)	(Commission File Number)	(IRS Employer Identification No.)
26650 Aliso Viejo Parkway, Aliso Viejo, California		92656
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (949) 389-6000

TABLE OF CONTENTS

	Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.
	Item 12. Results of Operations and Financial Condition.
SIGNATURES
EXHIBIT INDEX
EXHIBIT 99.1

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.

     (c) Exhibits

99.1 Press Release*, dated March 30, 2004, reporting the preliminary financial results of QLogic Corporation for its fiscal fourth quarter ended March 28, 2004.

* The press release is being furnished pursuant to Item 12, and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

Item 12. Results of Operations and Financial Condition.

     On March 30, 2004, the Registrant reported preliminary financial results for its fiscal fourth quarter ended March 28, 2004. A copy of the press release issued by the Registrant concerning the foregoing preliminary results is furnished herewith as Exhibit 99.1 and is incorporated by reference.

     The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filings of the Registrant under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as shall be expressly set forth by specific reference in such filing. The information in this report, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

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.

	QLOGIC CORPORATION
March 30, 2004	/s/ Frank A. Calderoni
	Frank A. Calderoni
	Senior Vice President and Chief Financial Officer

EXHIBIT INDEX

Exhibit
Number	Description of Document
99.1	Press Release, dated March 30, 2004, reporting the preliminary financial results of QLogic Corporation for its fiscal fourth quarter ended March 28, 2004.