Last name 龍 (Long 
, Ryu , 龍 ) , worldwide, is a widespread surname. The last name 龍 is characteristic of Macao, where it is a common surname, Malaysia, and Cayman Islands (explore the name in all countries). Not in comparison with a country's population, the name is most common in China, the United States, and Malaysia. Very seldom, 龍 is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ryu, Long | Malaysia, United Kingdom, China, United States, Vietnam |
| 龍 | China |
Dragon, Jong, Kaplan, Longová, Loong, Lung, Lyong, Lêng, Lóng, Rjong, Rong, Ryo, Ryoh, Ryong, Ryou, Ryuu, Ryō, Yong, Yung, Yılan, Йонг, Лонг, Рё, לונג, ريو, لونج, لونغ, ヨン, リュウ, リョウ, ロング, 了, 享, 亮, 僚, 凌, 容, 崚, 庸, 怜, 朗, 椋, 涼, 漁, 燎, 玲, 瞭, 稜, 竜, 綾, 良, 諒, 遼, 量, 陵, 隆, 領, 麗, 龍氏, 龙, 龙氏, 룡, and 용
| 公孫龍 disciple of Confucius (b. 498) |
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| 陳龍 person, CBDB ID = 438201, CN (b. 1647) |
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| 龍錢潔 Qing dynasty person CBDB = 55365, CN (b. 1654) |
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龍覲光 Chinese general, CN (b. 1863) |
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| 陳龍 Chinese businessman, CN (b. 1852) |
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| 龍粛 Japanese historian (1890-1964), JP (b. 1890) |
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村上 龍 Japanese writer, JP (b. 1952) |
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龍文康 Hong Kong screenwriter, CN (b. 1972) |
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| 龍青雲 Victim of post-war Taiwan's authoritarian regime, TW (b. 1926) |
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| 龍剛 Hong Kong film director, actor, screenwriter, and film producer, CN (b. 1934) |
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| 龍憲一 Japanese baseball player, JP (b. 1937) |
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| 龍 隆行 Japanese baseball player, JP (b. 1941) |
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| 龍思良 TW (b. 1937) |
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| 張龍 TW (b. 1943) |
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| 浅野 龍 Japanese sport sailor, JP (b. 1963) |
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