Casa Alonso

Casa Alonso is a house museum and cultural center in Vega Baja Pueblo, the historic downtown of the municipality of Vega Baja, Puerto Rico. It was listed on the National Register of Historic Places in 1996. The house is also known as Museo de Arte, Historia y Cultura Casa Alonso, administered by the municipality of Vega Baja.

It is a two-story wood and masonry "neoclassical vernacular style" residence. It was lived in successively by Soliveras, Otero, and Alonso families, of sugar plantation wealth.