UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2005

Commission File Number 1-7616

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

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____________

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____________

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

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

Table of Contents

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, thereunto duly authorized.

This report on Form 6-K contains the followings:

(Translation)

June 29, 2005

To Our Shareholders:

Notice of Resolutions at the 59th Ordinary General Meeting of Shareholders

We take pleasure in informing you that the matters were reported on or acted upon as described hereunder at the 59th Ordinary General Meeting of Shareholders of the Company held on June 29, 2005.

Description

Matters reported on:

Matters acted upon:

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Please be advised that at the Board of Directors’ meeting held after the Shareholders’ Meeting a resolution was made to appoint Mr. Tamihiko Sudo as Executive Vice President and Representative

Director, Mr. Osamu Yamada as Senior Managing Director, and Messrs. Yoichi Sato and Akira Haeno as Managing Directors. All those elected assumed their offices, respectively.

Accordingly, the Company’s Directors and Corporate Auditors are currently as follows:

In addition, at the above Board of Directors’ meeting, Messrs. Kaoru Sato, Keiichi Yamauchi and Kazumi Kuriyama were newly elected as Executive Officers, and all those elected assumed their offices, respectively.

Accordingly, the Company’s Executive Officers are currently as follows:

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(TRANSLATION)

THE 59TH BUSINESS REPORT

This is a translation of the original Business Report written in the Japanese
language, prepared primarily for the benefit and information
of shareholders of the Company’s common stock.

PIONEER CORPORATION
Tokyo, Japan

TO OUR SHAREHOLDERS
 

During the 59th annual accounting period, ended March 31, 2005, consolidated operating revenue of Pioneer Corporation was ¥733,648 million, up 4.7% over the previous year.

The Company posted net loss of ¥8,789 million, compared with net income of ¥24,838 million recorded in the previous year, due mainly to decreased gross profit margin resulting from intensified price competition for our major products. In addition, impairment losses of carrying value of certain production facilities and losses in connection with withdrawal from the North American cable TV set-top box business were recognized.

Year-end dividend payments were set at ¥12.5 per share of common stock, the same amount as in the previous year. Adding this to the interim dividend paid last December brings the total annual cash dividend to ¥25, the same amount as in the previous year.

The business environment remains severe, characterized by uncertain economic conditions in our major markets — Japan, North America and Europe — lower prices and harsher competition beyond our projections in our major product categories, and exchange rate fluctuations. To cope with the situation and recover profitability quickly, we are advancing cost reduction efforts among the group companies. At the same time, we are focusing our resources in our strategic businesses.

We are reviewing our production system and the reduction of product models to reduce costs on a global scale. In addition, we are reducing inventory in the whole process from parts procurement to marketing through our supply chain management. We will also adjust staffing to more appropriate levels throughout the group companies.

In our plasma display business, competition is getting severer while demand is steadily expanding. To cope, we are integrating our

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technologies with those of our new manufacturing subsidiary, which joined the Pioneer Group in October 2004, and raising the yield rate and reducing the number of parts. To enhance our products’ competitiveness, we are also reducing product power consumption levels and developing high-quality full-specification high-definition plasma TVs.

In the DVD business, markets for DVD recorders, especially those with hard disk drives (HDDs), and recordable DVD drives for personal computers (PCs) are rapidly growing. On the other hand, prices are getting lower and competition is getting harsher. Therefore, we are speeding up new product development cycles so that our products are more in sync with market trends. We are continuing full-fledged efforts to cut costs and reduce inventory by integrating production from laser pickups to finished products in China. We are also expanding sales of drive units for DVD recorders to other manufacturers on an OEM (original equipment manufacturing) basis.

Our car electronics business aims to widen its lead in the consumer and OEM markets. Our car navigation systems enjoy an excellent reputation in Japan, and we also intend to expand this business in Europe and North America, where our sales of these systems have been steadily growing. In the car audio business, we plan to fortify our strong position with distinctive new products, and maintain our sales drive in such growing markets as China and Central and South America.

We appreciate the support that shareholders have always given us, and look forward to more of it. And we will keep doing everything in our power to improve shareholder value.

June 2005
Tokyo, Japan

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CONSOLIDATED OPERATING REVENUE BY BUSINESS SEGMENT
 

Percent of Operating Revenue

Year ended March 31

Home Electronics

Sales in the Home Electronics segment increased 7.0% to ¥301,228 million from the previous year.

     In Japan, sales rose 11.6% to ¥87,954 million, primarily due to a large increase in sales of plasma displays, including the expansion of our OEM product sales, despite decreased sales of recordable DVD drives for PCs, DVD recorders and audio products.

     Overseas sales also rose 5.2% to ¥213,274 million, due to an increase in sales worldwide of plasma displays and DVD recorders, despite a decrease in sales of audio products and DVD players worldwide and recordable DVD drives in Europe and North America, as well as the withdrawal from our cable TV set-top box business in North America.

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Car Electronics

Sales in the Car Electronics segment increased to ¥303,410 million, up 3.8% from the previous year.

     In Japan, sales decreased 1.2% to ¥120,260 million, influenced by decreased sales of car navigation systems in the consumer market. This offset an increase in sales of car navigation systems in the OEM market, reflecting shifting demand from the consumer market to the OEM market.

     Overseas sales increased 7.4% to ¥183,150 million, due to increased sales of car audio products for the OEM market and car navigation systems in Europe and North America, and of car audio products for the consumer market in Central and South America, despite decreased sales of car audio products for the consumer market in Europe and North America.

Patent Licensing

Royalty revenue from Patent Licensing decreased 13.4% from the previous year to ¥10,237 million, reflecting the expiration of patents included in a larger portfolio of patents licensed to the optical disc industry.

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Others

Sales in this segment increased 2.9% from the previous year to ¥118,773 million.

     In Japan, sales decreased by 14.1% to ¥53,935 million, primarily due to a decrease in sales of OLED display panels and a sales shift from Japan to China of semiconductors for laser pickups, despite an increase in sales of FA systems.

     Overseas, sales were up 23.3% to ¥64,838 million, primarily due to increased sales in China of devices for cellular phones and semiconductors for laser pickups, and in Asia of speaker devices for cellular phones, despite decreased sales in North America and Europe of plasma displays for business use.

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CONSOLIDATED FINANCIAL STATEMENTS

(1)  Consolidated Balance Sheets

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(2)  Consolidated Statements of Operations

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(3) Consolidated Statements of Cash Flows

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Notes:

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NON-CONSOLIDATED FINANCIAL STATEMENTS

(1)  Condensed Balance Sheets

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(2)  Condensed Statements of Operations

(3)  Appropriation of Unappropriated Retained Earnings

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CONDITION OF SHAREHOLDERS AND SHARES

Note: 5,635,190 shares of treasury stock held by the Company are included.

Distribution of Share-ownership

Note: Japanese individuals and others include 5,635 thousand shares as treasury stock held by the Company.

Top Ten Largest Shareholders

Note: The Company holds 5,635 thousand shares as treasury stock.

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Stock Exchange Listings

Price per Share and Volume of Shares Traded on the Tokyo Stock Exchange

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Pioneer to Issue Share Acquisition Rights to be Granted as Stock Options

TOKYO — Pioneer Corporation has announced that it resolved, at the meeting of its board of directors held on June 29, 2005, to issue share acquisition rights for the purpose of granting stock options, pursuant to the provisions of Articles 280-20 and 280-21 of the Commercial Code of Japan, and to the approval at its ordinary general meeting of shareholders held on June 29, 2005.

The terms of the issue are as follows:

Description

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References:

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For further information, please contact:
Hideki Okayasu
Senior Executive Officer and General Manager, Finance and Accounting Division
Pioneer Corporation, Tokyo
Phone: +81-3-3494-1111 / Fax: +81-3-3495-4431
E-mail: pioneer_shr@post.pioneer.co.jp
IR Website: http://www.pioneer.co.jp/ir-e

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Determination of Final Terms of
Share Acquisition Rights to be Granted as Stock Options

TOKYO — Pioneer Corporation has announced that today it determined the final terms of share acquisition rights for the purpose of granting stock options as follows, which issue was resolved at the meeting of its board of directors held on June 29, 2005.

Description

References:

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For further information, please contact:
Hideki Okayasu
Senior Executive Officer and General Manager, Finance and Accounting Division
Pioneer Corporation, Tokyo
Phone: +81-3-3494-1111 / Fax: +81-3-3495-4431
E-mail: pioneer_shr@post.pioneer.co.jp
IR Website: http://www.pioneer.co.jp/ir-e

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