File No. 0-27884

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934

For the month of July, 2007

Macronix International Co., Ltd.

No. 16 Li-Hsing Road,
Science-Based Industrial Park
Hsinchu, Taiwan, Republic of China

[ Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.]

Form 20-F þ Form 40-F o.

[ Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.]

Yes o No þ.

[ If “ Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82: .]

Table of Contents


Monthly Sales Report- July 2007			3

Regulated Announcement for the month of July 2007			4 ~ 5

Signatures			6

MACRONIX INTERNATIONAL CO., LTD.

For the month of July 2007

This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3) Endorsements and guarantees 4) Financial derivative transactions for the period of July 2007.

Sales volume (NT$ : Thousand)


Time	Item	2007		2006		Changes		(%)
July	Invoice amount		2,018,409		1,832,790		+185,619		10.13	%
July	Net Sales		2,014,927		1,818,853		+196,074		10.78	%

Funds lent to other parties (NT$ : Thousand) : None

Endorsements and guarantees (NT$ : Thousand) :


	Limit of endorsement		July		Bal. As of period end
MXIC		15,977,394		0		1,154,670
MXIC’s subsidiaries		0		0		0
MXIC endorses for subsidiaries				0		1,135,226
MXIC’s subsidiaries endorses for MXIC				0		0
MXIC endorses for PRC companies				0		0
MXIC’s subsidiaries endorses for PRC companies				0		0

Financial derivatives transactions (NT$ : Thousand)

4-1 Trading purpose : None

4-2 Hedging purpose (for assets / liabilities denominated in foreign currencies): None

MACRONIX INTERNATIONAL CO., LTD.

For the month of July 2007

This is to report 1) the trading of directors, supervisors, executive officers and 10% shareholders of MXIC ; 2) the pledge and clear of pledge of MXIC common shares by directors, supervisors, executive officers and 10% shareholders of MXIC ; 3) outstanding units and shares of ADR by MXIC for the month of July 2007.

The trading of directors, supervisors, executive officers and 10% shareholders :


Title	Name	Number of shares held when elected (for Directors, Supervisors and Executive Officers)		Number of shares held as June 30,2007		Number of shares held as July 31,2007		Changes
Director	Champion Investment Co., Ltd		2,334,854		2,334,854		2,234,854	-100,000
Director	J.P. Peng		3,455,684		3,446,684		3,437,684	-9,000
Associate Vice President	Allen Dai		0		197,119		682,146	+485,027 (Stock Option)
Associate Vice President	C.H. Hung		0		222,871		177,871	-45,000

The clear of pledge of MXIC common shares by directors, supervisors, executive officers and 10% shareholders : None

Title

Name

Number of the
clear of pledge of
common shares
as of June
30,2007

Date of the clear
of pledge

Accumulated
number of pledged
common shares

Director

Champion Investment Co., Ltd

2,334,854

2007/07/09

1,334,854

The pledge of MXIC common shares by directors, supervisors, executive officers and 10% shareholders : None

Outstanding units and shares of ADR :

Outstanding of units on

Outstanding of shares on

Outstanding of units on

Outstanding of shares on

June 30,2007

July 31,2007

1,524,779.7

15,247,797

1,414,779.7

14,147,797

MACRONIX INTERNATIONAL CO., LTD.

For the month of July 2007

This is to report 1) the acquisition of assets by MXIC and 2) the disposition of assets by MXIC for the month of July 2007.

The acquisition of assets : None

The disposal of assets : None

SIGNATURES

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


	MACRONIX INTERNATIONAL CO., LTD.


Date: August 29, 2007	By:	/s/ Paul Yeh
		Name: Paul Yeh
		Title: Associate Vice President of Finance Center

MACRONIX INTERNATIONAL CO LTD 6-K