Brett Borgen (7 November 1934 – 11 March 2014) was a Norwegian writer.
Borgen was born in Oslo as a daughter of Annemarta and Johan Borgen.
She made her debut with Fra en ikke helt vellykket skuespillerinnes dagbok in 1972, and is also remembered for Istedenfor Lisbeth, Dualoger med VÃ¥r Herre and Isabella, sorgen og Don Juan in 1977, En time med Jesus (1978), Den fortapte datter (1979), Heltinnen (1981) and the memoirs Lillelord og Lady Brett (1985).