Cognomen Siyan (思妍 
, Siyan 
, 思雁 ) , around the globe, is quite a rare surname. The surname Siyan is characteristic of Qatar, where it is quite a rare surname, Sri Lanka, and Iraq. Measured by absolute frequency, the name is most common in China, Iraq, and India. More prevalently, Siyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 思妍, 思雁 | China |
| Siyan | Bangladesh, Iraq, India, Sri Lanka, China |
| Сиян | Kazakhstan, Russia, Ukraine, Kyrgyzstan |
Sıyan, Çiyan, Сийан, Сиянь, Сіян, سیان, ស៊ីយ៉ាន, ស៊ីយ៉ាន់, 丝妍, 丝燕, 丝砚, 丝艳, 丝言, 丝雁, 偲嫣, 厶妍, 司严, 司妍, 司岩, 司彦, 司晏, 司炎, 司燕, 司研, 司砚, 司艳, 司衍, 司言, 司谚, 司闫, 司颜, 嗣妍, 嗣岩, 嗣嵒, 嗣延, 嗣彦, 嗣晏, 嗣棪, 嗣炎, 嗣焱, 嗣燕, 嗣琰, 嗣研, 嗣砚, 嗣艳, 嗣衍, 嗣言, 嗣雁, 四岩, 四延, 四彦, 四晏, 四炎, 四焰, 四焱, 四燕, 四眼, 四艳, 四言, 四雁, 四顔, 四验, 寺炎, 寺艳, 巳妍, 巳嫣, 巳炎, 巳焱, 巳燕, 巳砚, 巳衍, 思严, 思俨, 思姸, 思嫣, 思岩, 思延, 思弇, 思彦, 思晏, 思檐, 思殷, 思沿, 思滟, 思演, 思炎, 思烟, 思焰, 思焱, 思燕, 思琰, 思盐, 思研, 思砚, 思艳, 思芫, 思蜒, 思衍, 思言, 思谚, 思谳, 思豔, 思闫, 思颜, 思龑, 撕严, 斯严, 斯妍, 斯嫣, 斯宴, 斯岩, 斯延, 斯彦, 斯晏, 斯殷, 斯滟, 斯演, 斯炎, 斯烟, 斯焰, 斯焱, 斯燕, 斯琰, 斯研, 斯砚, 斯艳, 斯芫, 斯衍, 斯言, 斯闫, 斯雁, 斯颜, 斯龑, 泗岩, 泗晏, 泗炎, 泗燕, 泗艳, 涘岩, 耜岩, 肆彦, 肆言, 西严, 西俨, 西堰, 西妍, 西嫣, 西宴, 西岩, 西延, 西彦, 西晏, 西沿, 西炎, 西焰, 西焱, 西燕, 西研, 西砚, 西艳, 西言, 西谚, 西雁, 西颜, 西验, 西龑, 锡严, 锡堰, 锡妍, 锡岩, 锡延, 锡彦, 锡晏, 锡沿, 锡滟, 锡演, 锡炎, 锡烟, 锡焰, 锡焱, 锡燕, 锡琰, 锡盐, 锡研, 锡砚, 锡縯, 锡艳, 锡衍, 锡言, 锡雁, 锡颜, 锡龑, 锶妍, 锶沿, 锶焱, and 鸶妍
| tao siyan (b. 1947) |
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| karanjit siyan (b. 1954) |
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