Louise Brun née Gulbrandsen (16 December 1830 in Bergen – 21 January 1866), was a Norwegian actress. She is counted among the most famed and most noted actors in Norway in the 19th century.
Louise Brun debuted on the stage in Bergen. She married her colleague Johannes Brun in 1851, also one of the most noted Norwegian actors of his time.
In 1857, the couple moved to Oslo, where she was active the remaining years of her career. She was considered to be artistic and with an intelligent apprehension ability. She played both tragedy and comedy, but was most known within the so-called salon-comedies, a popular genre of the period.