Michail Grigoriadis

{{Infobox office holder

|name = Michail Grigoriadis

|image = File:Michail Grigoriadis, Prince of Samos.jpg

|office = Prince of Samos

|term_start = 1900

|term_end = 1902

|predecessor = Konstantinos Vagianis

|successor = Alexandros Mavrogenis

|birth_date = 1841

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Michail Grigoriadis was the Ottoman-appointed Prince of Samos from 1900 to 1902.{{Cite book |last=Sevastopoulos |first=Nikos S. |url=https://books.google.com/books?id=wG1oAAAAMAAJ |title=Samos: mia anadromē stēn historia tēs 1360 p.Ch.-1943 m.Ch |date=2004 |pages=229 |language=el}}{{Cite web |title=Πανδέκτης: Γρηγοριάδης Μιχαήλ |url=http://pandektis.ekt.gr/pandektis/handle/10442/60211 |access-date=2023-12-05 |website=pandektis.ekt.gr}}

An incompetent prince, he achieved very little during his reign and was dismissed by the Ottoman Sultan after a reign of only two years.