Signe Amanda Georgina Hebbe (30 July 1837 – 14 February, 1925) was a Swedish operatic soprano and instructor.
Between 1864 and 1879, she toured Europe as an opera and concert singer and performed in Stockholm, Karlsruhe, Copenhagen, Théâtre Lyrique in Paris, Warsaw, Geneva, Milan, Palermo, Helsingfors, and Oslo.
Interested in women's issues, Signe Hebbe preferred to give women's parts in opera's a more independent and strong interpretation rather than the traditional weak interpretations, innovations which exposed her to criticism for not adjusting to the opera traditions.
In her own school, she was an instructor in the technique in speech, singing, plastique (mimic) and role analysis.
Some of her notable pupils include John Forsell, Emilie Mechelin and Carolina Östberg.