הרב מאיר איזנשטטר היה מגדולי רבני הונגריה במאה ה-19, פוסק ומנהיג אורתודוקסי בולט, ועמד בראשות ישיבה גדולה בהונגריה.
Meir Eisenstaedter was a Hungarian rabbi, Talmudist, and paytan. He is best known as the author of Imre Esh, the collection of his responsa published by his son in 1864. Eisenstaedter was also known as Maharam Asch, Meir Gyarmath, and Meir Ungvar after his later rabbinates.