Giovanni Gabrielli (died between 1603 and 1611) was an Italian actor of the commedia dell'arte, who performed under the name Sivello.^[1]

Gabrielli was particularly famous for portraying several characters talking together in different languages.^[1] The 18th-century historian Francesco Saverio Quadrio relates that Gabrielli was able to impersonate women with his voice only, without the benefit of a costume change.^[2] His portrait was engraved by Agostino Carracci.^[3]

His son Francesco Gabrielli was also a well known actor.^[1]

Two works of Gabrielli were published in Bologna in the early 17th century:^[4]