Lundgaard & Tranberg is an architecture firm based in Copenhagen. It was founded in 1983 by Boje Lundgaard and Lene Tranberg. In the 1990s, the firm gained a reputation as designers of heat & power plant and other technical facilities, while its breakthrough in the general public came in the mid-2000s with the Charlottehaven from residential project from 2004 and particularly the award-winning and highly celebrated designs for the Tietgenkollegiet student residences and a new building for the Royal Danish Theater. In 2004, just when the firm's major success set in, Boje Lundgaard died, and Lene Tranberg continued the practice with a new partner group.