QBASIC是BASIC（Beginner's All-purpose Symbolic Instruction Code，初学者通用指令代码）语言的一个变种，由美国微软公司开发，1991年随MS-DOS 5.0推出。它不能被编译成独立的可执行文档，源代码在集成开发环境（IDE）中先被编译成中间代码，然后中间代码在IDE中被解释执行。它被设计用来代替GW-BASIC，并被集成在MS-DOS 5.0及其更高版本（包括Windows 95）中。QBASIC基于微软稍早推出的QuickBASIC 4.5，但去掉了后者的编译和连接部分。

QBasic (Microsoft Quick Beginners All purpose Symbolic Instruction Code) is an IDE and interpreter for a variety of the BASIC programming language which is based on QuickBASIC. Code entered into the IDE is compiled to an intermediate form, and this intermediate form is immediately interpreted on demand within the IDE. It can run under nearly all versions of DOS and Windows, or through DOSBox/DOSEMU, on Linux and FreeBSD. For its time, QBasic provided a state-of-the-art IDE, including a debugger with features such as on-the-fly expression evaluation and code modification.