DieselHouse is an interactive exhibition on diesel technology located on the grounds of the still operating H. C. Ørsted Power Station in the South Docklands of Copenhagen, Denmark.

The exhibition is centred on a gigantic decommissioned Burmeister & Wain diesel engine which was the world's largest for more than 30 years.

The result of a collaboration between the Museum of Copenhagen and MAN Diesel, DieselHouse opened in a former machine hall at H. C. Ørsted Power Station in June 2006.

The conversion of the building was undertaken by Gottlieb & Paludan Architects and has retained the machine hall’s basic structures but inserted three new storeys with exhibition space and a gallery that flanks the large diesel engine.

During World War II a resistance group consisting of workers at the power station used the engine for hiding weapons.