Asta Nørregaard was a Norwegian painter who is best known for her portraits.
Nørregaard was born in Christiania (now Oslo), Norway. She was the daughter of Hans Peter Nørregaard (1818–1872) and Elise Jacobine Hesselberg (1821–1853). She and an older sister were orphaned early and both remained unmarried. Asta Nørregaard received her early education at the Knud Bergslien painting school together with Harriet Backer. She was a pupil of Eilif Peterssen in Munich from 1875 to 1878. She studied in Paris during 1879.

Nørregaard held solo exhibitions at Blomqvist Kunsthandel in 1893, 1903, 1913 and 1925. She was also a frequent exhibitor at group exhibitions: Salon de Paris in 1881 and 1882, and world exhibitions in Antwerp in 1885 and Paris 1889. She received the King's Medal of Merit in gold in 1920. Her work is exhibited at the Munch Museum, Oslo City Museum, University of Oslo and National Gallery in Oslo. Nørregaard was included in the 2018 exhibit Women in Paris 1850-1900.