风向袋或风锥是一个圆锥形纺织管，旨在表明风向和风速。风向袋通常是用在机场，或有气体泄漏危险的化工厂。他们有时是坐落在公路两旁当风的位置。

风向袋所表示的风向是与风向袋成相反的方向（请注意，风向是被指定为传统的罗盘指向从风起源；所以风向袋指向正北表明南风）。要表示风速则是风向袋与其标杆的角度；在低风速的风向袋与其标杆的角度则较小；在强风的飞行水平（角度较大）。

在联邦航空局标准参照下，15节（每小时17英里）的风力就能将风向袋充分延长。3节（每小时3.5英里）的微风就能吹动风向袋。

在许多机场所用的风向袋都是在夜间发出灯光，无论是在顶端发光，或是有灯安装在内里。

A windsock is a conical textile tube which resembles a giant sock. Windsocks typically are used at airports and at chemical plants where there is risk of gaseous leakage. They are sometimes located alongside highways at windy locations.

Wind direction is the opposite of the direction in which the windsock is pointing (note that wind directions are conventionally specified as being the compass point from which the wind originates; so a windsock pointing due north indicates a southerly wind). Windspeed is indicated by the windsock's angle relative to the mounting pole; in low winds, the windsock droops; in high winds it flies horizontally.