Aloyzas Stasiulevičius (born 8 March 1931) is a Lithuanian painter, graphic artist, and academic. He studied at the Lithuanian Art Institute (now the Vilnius Academy of Arts) from 1950 to 1956, graduating with a specialization in painting. Following his studies, Stasiulevičius joined the faculty of the same institution, eventually attaining the rank of professor and influencing several generations of Lithuanian artists.
His artistic output includes oil paintings, watercolors, and graphic works, with recurring themes of landscapes, still lifes, and portraiture. Critics have noted a synthesis of modernist and expressionist tendencies in his style, characterized by bold coloration and dynamic compositions.
Stasiulevičius has been an active member of the Lithuanian Artists' Union since the 1960s. His contributions to Lithuanian culture have been recognized with several honors, including the Lithuanian National Prize for Culture and Arts (1998) and the Order of the Lithuanian Grand Duke Gediminas. His works are held in the collections of major Lithuanian museums, such as the Lithuanian Art Museum and the National Museum of Fine Arts.