旋转木马或回转木马是游乐场机动游戏的一种。在一个旋转的平台上有座位供游客乘坐，这些座位传统上都会装饰成木马，并且会上下移动，也会装饰成汽车飞机或者其它卡通动物形象的座位，但这些座位通常不会移动。

最早有纪录的的旋转木马，在拜占庭帝国时已经出现。第一个以蒸汽推动的旋转木马，约在1860年在欧洲出现。现在依然可以在各大小游戏场、商场等地方，见到各式旋转木马。

在收费的主题公园中，会有装饰豪华典雅的旋转木马；在免费的休闲公园中也有旋转木马，它俗称「呇呇转」，由人力推动的。

A carousel (American English: from French carrousel and Italian carosello), roundabout (British English), or merry-go-round, is an amusement ride consisting of a rotating circular platform with seats for riders. The "seats" are traditionally in the form of rows of wooden horses or other animals mounted on posts, many of which are moved up and down by gears to simulate galloping, to the accompaniment of looped circus music. This leads to one of the alternative American names, the galloper. Other popular names are jumper, horseabout and flying horses.