Cognos Named Top Business Intelligence and Corporate Performance Management Vendor
in VARBusiness 500;
Continues Consecutive Streak as Leader

– Ranked among North America's top 500 technology
integrators by CMP Media–

Ottawa, Ontario and Burlington, Massachusetts, June 16, 2005— Cognos (Nasdaq: COGN; TSX: CSN), the world leader in business intelligence and corporate performance management (CPM), today announced it has been ranked as the leader among business intelligence and corporate performance management vendors on the 2005 VARBusiness 500 ranking.

“Cognos is committed to being a trusted advisor to our customers and partners,” said Dave Laverty, Senior Vice President, Global Marketing of Cognos. “Being recognized year after year by the VARBusiness 500 reflects our commitment to our partners and customers in providing a range of solutions to help drive higher performance. Our inclusion in this group is proof of our continued leadership in the business intelligence and corporate performance management markets.”

Each year, the VARBusiness 500 recognizes North America’s top technology companies. The 11th annual report outlines the leading revenue producers among approximately 90,000 solution-provider organizations, which account for $334 billion in sales of information-technology (IT) services and products. To complete the 2005 ranking of the 500 largest North American solution providers, VARBusiness partnered with research firm Answers Research to help collect and analyze the data. Finalists were ranked according to their fiscal year 2004 revenue, based only on their reseller-related services business. The 2005 rankings are available online at www.varbusiness.com.

“With Cognos, we are helping customers better manage business cycles and delivering faster and higher return on investment,” said David Doucette, CEO of Creative Computing, a Cognos Platinum Partner™ reseller. “The combinations of our respective solutions and innovative practices have helped enable clients to better understand their business, to make informed decisions quickly, and to create a competitive advantage.”

Cognos offers its partners a portfolio of programs to allow systems integrators, resellers and channel partners to take advantage of the growth in the Business Intelligence and Corporate Performance Management market. For information on becoming a Cognos Business partner visit http://www.cognos.com/partners/. Cognos will be hosting the Cognos Global Partner Summit 2005 on June 24-26, an exclusive event consisting of senior executive sessions, breakout sessions, and networking opportunities.

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About Cognos:

Cognos delivers the next level of competitive advantage - Corporate Performance Management (CPM) - achieved through the strategic application of BI on an enterprise scale. Our integrated CPM solution helps customers drive performance through planning; monitor performance through scorecarding; and understand performance through business intelligence.

Cognos serves more than 23,000 customers in over 135 countries. Cognos enterprise business intelligence and performance management solutions and services are also available from more than 3,000 worldwide partners and resellers. For more information, visit the Cognos Web site at http://www.cognos.com.