Kirsten Eleonore Helena Sand (1895–1996) was a Norwegian architect. In 1919, she became the first woman to graduate with full technical competence in architecture from the Norwegian Institute of Technology. Until the Second World War, she ran her own practice in Oslo where she designed private homes. After the war she contributed to reconstruction projects, especially in Troms County in northern Norway.
Born on 27 November 1895 in Kristiania (now Oslo), Sand was the daughter of the lawyer August Nicolai Sand (1852–1940) and his wife Constance, née Hirsch, a schoolteacher. After matriculating from high school, she was admitted to the Norwegian Institute of Architecture and Design in 1915 where she was the first woman to receive a full architecture diploma in 1919.
After working on military projects for several months, she joined August Nielsen's firm in Oslo. In 1928, she opened her own office which she ran until 1940, designing private homes, apartment buildings and summer houses for Oslo and the surroundings. They were usually in the Functionalist style. In the post-war period, Sand was one of the main contributors to the reconstruction of properties destroyed in the northern area of Troms where she was based from 1952 to 1966.
While in Troms, in 1952 she designed an experimental house for herself on Mellomveien. Typically for Sand, the layout is centred on a large kitchen which forms part of the open living-room area. It is closely connected to a laundry room and pantry with outdoor firewood storage within easy reach. It was therefore unnecessary for the house to have a cellar and could thus be built at a reasonable cost. It was also particularly suited to the needs of a housewife or female occupant.
In 1965, Sand was honoured with the King's Medal of Merit (gold). On the occasion of her hundredth birthday, she became an honorary member of the Norske arkitekters landsforbund, the national association for architects in Norway, "for her strong commitment to housing design and her huge contribution to reconstruction work in northern Norway".
Kirsten Sand died on 12 May 1996 in Tromsø. She is buried in a family grave in Vår Frelsers gravlund cemetery in Oslo.