Cecilia Bartoli (born June 4, 1966 in Rome) is an Italian coloratura mezzo-soprano opera singer and recitalist. She is best-known for her interpretation of the music of Mozart and Rossini, as well as for her performances of lesser-known Baroque and classical music. She is known for having the versatility to play both soprano and mezzo roles, and is sometimes considered a soprano with a low tessitura. Bartoli's coloratura skill has earned her the title the Queen of Agility.

Bartoli is considered a coloratura mezzo-soprano (Koloratur-Mezzosopran) with an unusual timbre. She is one of the most popular (and one of the top-selling) opera singers of recent years. Bartoli is much liked by the concert-going public for her lively, vivacious on-stage persona, while her lyric voice and investigations of Baroque music have given her considerable recognition even among the non-opera-going public.