Demetrius Nicolaides (Greek: Δημήτριος Νικολαΐδης Dimitrios Nikolaidis; French: Démétrius Nicolaïdes;c. 1843 - 3 July 1915), also known as Nikolaidis Efendi, was an Ottoman Greek journalist and compiler of legislation. Johann Strauss, author of "A Constitution for a Multilingual Empire: Translations of the Kanun-ı Esasi and Other Official Texts into Minority Languages," wrote that Nicolaides was "an extremely active but somewhat enigmatic figure in the presslife of 19th century Istanbul."