[[File:Wind speed and direction instrument - NOAA.jpg|200px|thumb|同時可測風速的風向標]]
'''风向标'''是测定[[风]]的来向的[[仪器]]。一般安装在四周空旷、离地约10米高的杆子上。在风压作用下，风标箭头指风的来向。一般會分作頭部、水平桿和尾翼三個部分。风向标最早的书面记载出现在中国西汉时期的《[[淮南子]]》，时称侯風扇<ref name="Needham">{{Citation|last1=Needham|first1=Joseph|last2=Ling|first2=Wang|volume=3|title=Science and Civilisation in China: Mathematics and the Sciences of the Heavens and the Earth|publisher=Cambridge University Press|page=478|year=1959}}</ref>。公元前50年古雅典建设的[[風之塔|风之塔]]顶则安装了风向标保留至今<ref>{{cite journal|title=The Water Clock in the Tower of the Winds|url=https://archive.org/details/sim_american-journal-of-archaeology_1968-10_72_4/page/345|first1=Joseph V.|last2=Price|first2=Derek J. de Solla|date=October 1968|journal=American Journal of Archaeology|issue=4|doi=10.2307/503828|volume=72|pages=345–355 (353)|jstor=503828|last1=Noble|author-link2=Derek J. de Solla Price}}</ref>。欧洲一些鸡型的风向标又称作风信鸡。
^Needham, Joseph; Ling, Wang, Science and Civilisation in China: Mathematics and the Sciences of the Heavens and the Earth 3, Cambridge University Press: 478, 1959
