Minix，是一个迷你版本的类Unix操作系统，由塔能鲍姆教授为了教学之用而创作，采用微核心设计。它启发了Linux核心的创作。

它的名称取自英语：Mini UNIX的缩写。与Xinu、Idris、Coherent和Uniflex等类Unix操作系统类似，衍生自Version 7 Unix，但并没有使用任何AT&T的代码。第一版于1987年发布，只需要购买它的磁片，就提供完整的源代码给大学系所与学生，做为授课及学习之用。2000年4月，重新以BSD授权条款发布，成为开放源代码软件。

MINIX (from "mini-Unix") is a POSIX-compliant, Unix-like computer operating system based on a microkernel architecture.

Early versions of MINIX were created by Andrew S. Tanenbaum for educational purposes. Starting with MINIX 3, the primary aim of development shifted from education to the creation of a highly reliable and self-healing microkernel OS. MINIX is now developed as open-source software.