Gaetano Bavagnoli (1879–1933) was an Italian conductor who was particularly known for his work within the field of opera. He was mainly active within Italy's major opera houses during the first third of the 20th century; although he did conduct at important international stages like the Metropolitan Opera in New York City and the Royal Opera House in London as well. He also worked as a voice teacher and was notably the instructor of opera singers Emanuel Kopecky, Lina Pagliughi, and Aureliano Pertile.
Born in Parma, Bavagnoli was the son of conductor and voice teacher Manlio Bavagnoli and it was from him that he received his early musical training. After graduating from the Parma Conservatory, Bavagnoli began working as a conductor in Italy in 1900. He also worked in Spain on the conducting staffs of the Teatro Real and the Liceu during the first decade of the 20th century. At the latter house he notably conducted performances of Vincenzo Bellini's La sonnambula with Amelita Galli-Curci as Amina.
On 10 August 1908 Bavagnoli conducted a performance of Giacomo Puccini's Manon Lescaut for the opening of the Teatro Municipal in San Nicolás de los Arroyos. In 1911 he joined the conducting staff of the Tetro Regio in Parma. While there he notably conducted that house's first presentation of Modest Mussorgsky's Boris Godunov on 25 December 1911 with Eugenio Giraldoni in the title role.