Thomson Announces Quarterly Dividend (All amounts are in U.S. dollars)

STAMFORD, Connecticut, July 27 /PRNewswire/ -- The Board of Directors of The Thomson Corporation (NYSE: TOC; TSX: TOC) declared a quarterly dividend on the company's common stock of US$0.20 per share. The dividend is payable on September 15, 2005 to common shareholders of record as of August 18, 2005. On an annualized basis, the dividend rate is US$0.80 per share.

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The Thomson Corporation and its predecessor companies have made uninterrupted quarterly common stock dividend payments since 1965.

The Thomson Corporation

The Thomson Corporation (http://www.thomson.com), with 2004 revenues of US$8.10 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools and applications to more than 20 million users in the fields of law, tax, accounting, financial services, higher education, reference information, corporate e-learning and assessment, scientific research and healthcare. With operational headquarters in Stamford, Conn., Thomson has approximately 40,000 employees and provides services in approximately 130 countries. The Corporation's common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).

Media Contact: Investor Contact: Jason Stewart Frank J. Golden Vice President, Media Relations Vice President, Investor Relations +1-203-539-8339 +1-203-539-8470 jason.stewart@thomson.com frank.golden@thomson.com

Web site: http://www.thomson.com