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Private limited company
Industry Consulting
Founded 1930
Founder Christen Ostenfeld (Dr Tech)
Headquarters Kongens Lyngby, Denmark
Key people
Lars Peter Søbye, CEO
Services Engineering, environmental science and economics
Revenue EURm 598.1 (2010)
Number of employees
6,000 (2009)
Subsidiaries Flint & Neill
COWI headquarters in Lyngby

COWI A/S is an international consulting group, specialising in engineering, environmental science and economics, based in Lyngby, Denmark.

It has been involved in more than 50,000 projects in 175 countries. It has over 6,000 employees, including engineers, biologists, geologists, economists, surveyors, anthropologists, sociologists and architects.[1]


COWI was founded in 1930 by civil engineer Christen Ostenfeld (Dr Tech).[2] Wriborg W. Jønson became a partner 16 years later. From 1946 to 1973, the company operated as a partnership under the name of Chr. Ostenfeld & W. Jønson. The initials of the two senior partners lent the company its name.

In 1973, the company became foundation-owned and was renamed COWIconsult, Consulting Engineers and Planners AS. In 1995, the company changed its name to COWI Consulting Engineers and Planners AS, eventually becoming COWI A/S in 2001.

In 2008 the firm bought Flint & Neill, a UK civil and structural engineering consultancy specialising in bridges.

In November 2014, the firm acquired Donaldson Associates Ltd, a UK base tunneling specialist company. At the time of acquisition, Donaldson Associates Ltd had 150 staff, operating from 5 UK offices and one international office in Hong Kong.


COWI A/S is the parent company of the COWI Group. COWI is a Danish private limited company, with the COWI Foundation as the majority shareholder.[3]


  1. ^ "About COWI". COWI. Retrieved 2009-02-03. 
  2. ^ "1930 - 1940: A nightclub – the first step towards an international company". COWI. Retrieved 2009-02-03. 
  3. ^ "Ownership". COWI. Retrieved 2009-02-03. 

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