Vitorino Nemésio Mendes Pinheiro da Silva (Praia da Vitória, December 19, 1901 – Lisbon, February 20, 1978) was a poet, author and intellectual from Terceira, Azores, best known for his romance Mau Tempo No Canal, as well as being a professor in the Faculty of Letters at the University of Lisbon and member of the Academy of Sciences of Lisbon.