ingenhoven associates is an architectural firm based in Düsseldorf, Germany.

The office was founded in 1985 by Christoph Ingenhoven and became notable for its ecologically oriented designs for high-rise buildings.

Former names of the company were Ingenhoven Overdiek and Partner and ingenhoven architects.

ingenhoven associates designed the RWE Tower in Essen (1991–96), a naturally ventilated double-skin facade high-rise building.

Other low-energy office buildings by the office are the Lufthansa Headquarters in Frankfurt (2006), the European Investment Bank in Luxembourg (2008), the Breezé Tower in Osaka (2008), 1 Bligh Street building in Sydney (2006–11) and the Marina One complex in Singapore.