Zhang Xian (Chinese: 張仙; pinyin: Zhāng Xiān) is a Chinese god who is the enemy of the tiangou (Chinese: 天狗; pinyin: tiāngǒu; Wade–Giles: t'ien¹-kou³; lit. 'Heavenly Dog'), a legendary creature in the form of a dog who creates eclipses. It is said that he protects his children from the dog with his bow and arrows. He is often depicted aiming at the sky, waiting for the beast to appear.

You can help expand this article with text translated from the corresponding article in Chinese. (April 2020) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Chinese Wikipedia article at [[:zh:張仙]]; see its history for attribution. You may also add the template {{Translated|zh|張仙}} to the talk page. For more guidance, see Wikipedia:Translation.

He is the god of birth and the protector of male children. Many sought^[when?] him to give them male offspring and to protect their living children^{[clarification needed : Should this be "living sons"?]}.