捕虫网是一种工具，用于捕捉在陆地上飞行或爬行的昆虫，例如蝴蝶、蜘蛛等。捕虫网多数由木头以及丝条制成，方便采集各种昆虫。由网柄、网框和网袋三部份所组成。

捕虫网分为以下几种：捕网、扫网、水网、受网及伞网。

捕网用来捕捉飞虫，是最常用的虫网。网柄的材料多为木制、竹制或金属制，柄长约1 ~ 1.5 公尺。网框直径约30 ~50 公分。网袋材质通常为尼龙纱，可避免伤及蝴蝶翅膀鳞粉与小型昆虫逃逸；深度约为网口直径的1.5 ~ 2倍。

扫网用来捕捉草地或树丛间的昆虫，和前者大同小异，但柄长只有约1 公尺左右，材质较捕网坚固。

A butterfly net (sometimes called an aerial insect net) is one of several kinds of nets used to collect insects. The entire bag of the net is generally constructed from a lightweight mesh to minimize damage to delicate butterfly wings. Other types of nets used in insect collecting include beat nets, aquatic nets, and sweep nets. Nets for catching different insects have different mesh sizes. Aquatic nets usually have bigger, more 'open' mesh. Catching small aquatic creatures usually requires an insect net. The mesh is smaller and can capture more.