类昆虫（Insectoid）是通称与地球的昆虫和蛛形类极为相似的外星生物，常出现于外星人目击事件和科幻小说中。

类昆虫最早的目集记录可追溯于1957年，当时亦有人目看到形似螳螂的外星人。而在《UFO experience in Canada》记载的类昆虫则形似草蜢。

Insectoid denotes any creature or object that shares a similar body or traits with common earth insects and arachnids. The term is a combination of "insect" and "-oid" (a suffix denoting similarity).

In technology, insectoid robots such as hexapods have been designed for scientific or military uses. Research continues to miniaturize these robots to be used as flying spies or scouts. Insectoid features may also increase the effectiveness of robots in traversing various terrains.