Cognomen Wei (Wei 
, وي 
, ウェイ 
, and others...) , throughout the world, is a prevalent family name. The cognomen Wei is habitual in Mongolia, where it is a prevalent surname, Malaysia, where it is a widespread surname, and Cayman Islands, where it is a common surname (explore the name in all countries). Measured by absolute frequency, it is the most numerous in China, Malaysia, and Mongolia. Very seldom, Wei is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wei | Taiwan, China, Mongolia, Malaysia, United States |
| وي | Morocco, Iraq, Egypt, Sudan, Saudi Arabia |
| ウェイ | Japan |
| Вэй | Belarus, Kyrgyzstan, Kazakhstan, Russia |
| ויי | Israel |
Gûi, Hui, Ngai, Ngui, Ngụy, Thác Bạt, Toba, Tobák, Tuoba, Vi, Vệ, Wai, We, Wee, Wej, Wey, Weì, Weî, Weï, Weı, Weǐ, Wi, Wie, Woe, Wèi, Wéi, Wêì, Wêî, Wëi, Wëí, Wëï, Wēi, Wēǐ, Wěi, Ùi, Ü, Вей, Ви, Тоба, وى, เวย, เว่ย, เหว่ย, 为, 为氏, 伟, 伟氏, 伪, 位, 偉, 偎, 偽, 僞, 儰, 卫, 卫姓, 卫氏, 危, 厃, 味, 唯, 喂, 喡, 喴, 囗, 围, 圍, 圩, 墛, 委, 威, 娓, 媁, 媙, 媦, 寪, 尉, 尾, 屗, 峗, 峞, 嵔, 嵬, 嶶, 巍, 帏, 帷, 幃, 徫, 微, 惟, 愄, 愇, 慰, 拓跋, 捤, 斖, 暐, 未, 李氏, 桅, 梶, 椲, 椳, 楲, 欈, 沩, 洈, 洧, 浘, 涠, 渨, 渭, 湋, 溈, 溦, 潍, 潙, 濰, 瀢, 炜, 為, 烓, 煒, 煟, 煨, 熭, 燰, 爲, 犩, 猥, 猬, 玮, 琟, 瑋, 璏, 畏, 痏, 痿, 癓, 硊, 硙, 碨, 磈, 磑, 維, 緭, 緯, 縅, 纬, 维, 罻, 胃, 艉, 芛, 苇, 苿, 荱, 菋, 萎, 葦, 葨, 葳, 蒍, 蓶, 蔚, 蔿, 薇, 薳, 藯, 蘤, 蘶, 蝟, 衛, 衞, 覣, 覹, 詴, 諉, 謂, 讏, 诿, 谓, 躗, 軎, 违, 逶, 違, 鄬, 鍏, 鍡, 鏏, 闈, 闱, 隇, 隈, 霨, 霺, 韋, 韑, 韡, 韦, 韪, 頠, 颹, 餧, 餵, 饖, 魏, 魏佳, 魏氏, 鮇, 鮠, 鮪, 鰃, 鲔, 鳂, 위, Ｗei, Ｗeｉ, Ｗéi, Ｗēī, Ｗēｉ, Ｗěi, Ｗｅi, and Ｗｅｉ
| wei xian Western Han Dynasty person CBDB=22262 (b. 142) |
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| wang wei Chinese official during the Eastern Han dynasty (b. 150) |
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| empress wei zifu spouse of Emperor Wu of Han (b. 155) |
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| wei huang (b. 150) |
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| wei dan (b. 179) |
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| wei shu Western Jin dynasty politician (209-290) (b. 209) |
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| wei xu (b. 200) |
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| wei mengbian [Wei Meng-pien] (b. 340) |
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| wei rui (b. 442) |
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| wei tian Northern Zhou person CBDB=194390 (b. 500) |
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| wei xuan Northern Zhou person CBDB = 31004 (b. 502) |
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| li wei Northern & Eastern Wei minister (b. 504) |
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| wei shuyu general (b. 509) |
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| emperor xiaojing of eastern wei Eastern Wei emperor (b. 524) |
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| emperor fei of western wei Western Wei emperor (b. 525) |
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