João Marques de Oliveira (Porto, 1853-1927, Porto) was a Portuguese naturalist painter.
He studied in the Academy of Fine Arts in Porto and in 1873 travelled to France with is colleague António Silva Porto, where they studied with academical painters Adolphe Yvon and Alexandre Cabanel. They became familiar with the French naturalist school of painting. They both introduced naturalism to Portugal when they returned in 1879. Marques de Oliveira painting is more open to impressionist influences in some of his most innovative works.