It can be, if it's carried by someone of the Jewish faith or with a Jewish heritage or background, etc.
But otherwise, it's predominantly German and first appeared from a personal name to a surname via West Prussia and Pomerania in medieval times as one of the notable families in the western region.
One source traces it using elements of RAGIN("counsel") and MERI("fame"), with variants including Reinmar, Reimer, Reimers, Reymers, Remmers, Reijmers(in Dutch) and Ramiro(in Spanish); one other source identified it as Latin, meaning "thing man" or "matter man", but neither could be confirmed as far as this author is concerned.
Amy Reimann
Lewis Reimann was born in 1890.
Heinrich Reimann was born in 1850.
Heinrich Reimann died in 1906.
Theodor Reimann was born in 1921.
Theodor Reimann died in 1982.
Max Reimann died in 1977.
Max Reimann was born in 1898.
Hans Reimann was born in 1941.
Michael Reimann was born in 1952.
Günter Reimann died in 2005.
Günter Reimann was born in 1904.