Andrea Vassallo (2 January 1856 – 28 January 1928) was an eclectic Maltese architect.
He designed buildings in various styles, including Neoclassicism, Rococo Revival, Neo-Gothic, Art Nouveau and Neo-Romanesque.
His masterpiece is the basilica of Ta' Pinu in Gozo, while other notable works include the domes of the Hamrun and Siggiewi parish churches, Villa Rosa and the now-demolished Casa Said.