QNX是商业类Unix实时操作系统，主要针对嵌入式系统市场。该产品开发于20世纪80年代初，后来改名为QNX软件系统公司，公司已被黑莓公司并购。

QNX采取微核心架构，操作系统中的多数功能是以许多小型的task来运行，它们被称为server。这样的架构使得用户和开发者可以关闭不需要的功能，而不需要改​​变操作系统本身。

QNX Neutrino（2001）已经被移植到许多平台并且运行在嵌入式市场中使用的各种现代处理器上，如PowerPC和x86。

QNX为学术界以及非商业用途的用户提供了一个特殊的许可。

QNX (/ˌkjuː ˌɛn ˈɛks/ or /ˈkjuːnᵻks/) is a commercial Unix-like real-time operating system, aimed primarily at the embedded systems market. The product was originally developed in the early 1980s by Canadian company Quantum Software Systems, later renamed QNX Software Systems and ultimately acquired by BlackBerry in 2010. QNX was one of the first commercially successful microkernel operating systems and is used in a variety of devices including cars and mobile phones.