巴海（ᠪᠠᡥᠠᡳ|v=bahai，？ - 1696年），瓜爾佳氏，滿洲鑲藍旗人，清朝初年將領。

巴海是沙爾虎達的長子。初封牛錄額真，累遷秘書院侍讀學士。沙爾虎達死後，被授予寧古塔總管之職。十七年，在石勒喀河流域的古法檀擊敗了由率領的俄羅斯軍隊，斬六十餘級。敘功，加拖沙喇哈番。次年發現巴海隱瞞了之前戰鬥中的不利，盡削原襲及功加世職。

康熙元年，以巴海為寧古塔將軍。在任上，他招降了邊外的墨爾哲之族。其族長扎努喀布克托請求內徙，巴海請徙置寧古塔近地，置佐領四十，以授扎努喀布克托及其族屬，分領其眾，號為新滿洲。十三年冬，巴海率諸佐領入覲，被賞賜黑狐裘、貂朝衣各一襲。十七年，因撫輯新滿洲有勞，與副都統安珠瑚一起，被授予世職一等阿達哈哈番兼拖沙喇哈番。

二十二年，巴海因上報田禾歉收不實而被彈劾，部議奪官、削世職。康熙帝念在巴海撫慰新滿洲之功的份上，下令罷免其將軍之職，降為三等阿達哈哈番。二十三年，授鑲藍旗蒙古都統，列議政大臣。三十五年卒，子四格襲職。

Bahai (Manchu:, Mölendroff: bahai; 巴海, ?-1696) was a Manchu military commander during the early Qing dynasty.

He was the eldest son of Šarhūda of the Gūwalgiya clan, which belonged to the Manchu Bordered Blue Banner. Beginning as a captain, he was appointed in 1657 a reader in the Bishu yüan (秘書院). In 1659 he succeeded his father who died in that year and was made a commander of the garrison troops at Ninguta. At the same time he inherited his father's rank of baron (男) of the first class. In 1660 he reported a complete victory over the Russian troops under Afanasy Pashkov (d. 1664, founded Nerchinsk in 1658) at the village of Gufatan (古法檀) which was in the Shilka River region. In 1661, upon the discovery that Bahai had purposely omitted troop losses in this battle in his reports, he was deprived of his hereditary rank of baron. Nonetheless in 1662 he was appointed the first military-governor of Ninguta. In 1673, he was rewarded for his success in organizing a tribe of natives called the Meljere into 40 companies known as the New Manchus (新滿洲), as a result he was given a minor hereditary rank five years later. In 1676 he removed his headquarters to a city west of Ninguta, called Kirin, and from 1682-83 took part in the preparations for attacking the Russians at Albazin. However he was deprived of all offices in 1683 after he false reported a famine that did not exist. But from 1684 to 1696 he served in Peking as a lieutenant-general in the Mongol Bordered Blue Banner.