Last name Menghui (梦辉 
, Menghui 
, 梦慧 ) , in the world, is quite a rare cognomen. The cognomen Menghui is habitual in China, where it is a rare surname, Malaysia, where it is a very rare surname, and Brazil, where it is an extremely rare surname. More frequently, Menghui is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 梦晖, 梦辉, 梦慧 | China |
| Menghui | China, Malaysia, Singapore, Taiwan, United States |
Менгхуи, 勐慧, 勐晖, 勐辉, 夢惠, 孟会, 孟佪, 孟卉, 孟徽, 孟惠, 孟慧, 孟晖, 孟汇, 孟珲, 孟荟, 孟蕙, 孟辉, 朦卉, 朦慧, 朦辉, 梦会, 梦卉, 梦回, 梦徽, 梦悔, 梦惠, 梦挥, 梦汇, 梦洄, 梦珲, 梦翚, 梦荟, 梦蕙, 梦讳, 檬荟, 濛惠, 濛绘, 濛輝, 濛辉, 猛慧, 猛晖, 猛灰, 猛辉, 盟会, 盟卉, 盟慧, 盟挥, 盟晖, 盟汇, 盟辉, 艋惠, 萌会, 萌卉, 萌彗, 萌惠, 萌慧, 萌晖, 萌辉, 蒙会, 蒙卉, 蒙回, 蒙徽, 蒙惠, 蒙慧, 蒙晖, 蒙汇, 蒙灰, 蒙珲, 蒙蛔, 蒙辉, 锰汇, and 锰辉