Juan B. Castagnino Fine Arts Museum, Art museum in Parque de la Independencia, Rosario, Argentina

The Juan B. Castagnino Fine Arts Museum is a two-floor building designed by architects Hilarión Hernández Larguía and Juan Manuel Newton, opened in 1936 at Oroño Boulevard and Pellegrini Avenue, beside Parque de la Independencia. It has 35 rooms of varying sizes and heights, with 700 linear meters for exhibitions.

The building was designed by architects Hilarión Hernández Larguía and Juan Manuel Newton and opened in 1936. It was donated to the Municipality of Rosario by Rosa Tiscornia de Castagnino in memory of her son Juan Bautista Castagnino, a painter, art critic and collector. The museum was officially inaugurated on 7 December 1937, incorporating the holdings of the former Municipal Fine Arts Museum founded in 1920.

The museum's name honours Juan Bautista Castagnino, a Rosario painter, art critic and collector, and the building was given by his mother Rosa Tiscornia de Castagnino. Its holdings combine European art, Argentine art of the 19th and 20th centuries, and works by Rosario artists up to the 1930s, drawn from private donations, the former Municipal Fine Arts Museum and later purchases.

Public transportation provides convenient access to the museum, with several bus lines serving the area. The location within the park makes orientation straightforward and allows visitors to explore the surroundings.

In 2004, a significant portion of the collection was transferred to establish the new Museum of Contemporary Art of Rosario. This division allowed the institution to better showcase art across different periods.