Ioannis Papafis or Giovanni di Niccolò Pappaffy (Greek: Ιωάννης Παπάφης; 1792 – 1886) was a Greek businessman and philanthropist, prominent for helping in the funding of the Greek War of Independence and in financing crucial sectors of independent Greece after its successful conclusion. He is considered a national benefactor of Greece. He was among the primary shareholders of the National Bank of Greece, donated to the University of Athens, and the Greek Orthodox Church through the Ecumenical Patriarch of Constantinople.