Norah Lange (23 October 1905 – 5 August 1972) was an Argentine writer, who was associated with the Buenos Aires avant garde of the 1920s and 1930s.

A member of the Florida group, which also included figures such as Oliverio Girondo (whom she married in 1943) and Jorge Luis Borges (who dedicated an article to her in his first book of prose, Inquisiciones), she published in the "ultraist" magazines Prisma, Proa, and Martín Fierro.

Her 1950 novel Personas en la sala was published in English as People in the Room (trans.

In 1959, SADE (the Argentine Society of writers) awarded her their Grand Prize of Honor.

This was the same award as Jorge Luis Borges had been given in 1944 but his work has remained more popular and in print.