Anna Katarina Bartels née Fernquist (1869–1950) was a Swedish operatic soprano. She made her debut at the Royal Swedish Opera in 1897 in the title role of Friedrich von Flotow's Martha. Engaged by the company for the next 20 years, she gained popularity as a soubrette and coloratura soprano but later turned increasingly to mezzo-soprano roles. In 1923, she was awarded the Litteris et Artibus medal.