Family name 木尔 (木尔 
, Muer 
) , globally, is a rare surname. The cognomen 木尔 is habitual in Belgium, where it is a rare surname, Germany, and Mexico, where it is a very rare surname. Measured by absolute frequency, the name is most common in China, Belgium, and Germany. Likewise, 木尔 is the forename as well as the last name.