Microsoft QuickBASIC（正确的简称是QB，而不是QBasic，后者是另外一个不同的产品）是BASIC进程设计语言的一个变种，由微软开发，用于MS-DOS平台，也有面向Mac操作系统的版本。笼统地讲，它是基于GW-BASIC的一个改进的产品，相比较而言，它有以下改进：支持用户自定义类型、加强了对结构化编程思想的支持、增加了图形功能和磁盘访问方法，此外，还提供了一个编译器。相对于面向商业和专业用途的微软BASIC Compiler产品线，QuickBASIC是一个个人用户的开发套件。

Microsoft QuickBASIC (also QB) is an Integrated Development Environment (or IDE) and compiler for the BASIC programming language that was developed by Microsoft. QuickBASIC runs mainly on DOS, though there was a short-lived version for Mac OS. It is loosely based on GW-BASIC but adds user-defined types, improved programming structures, better graphics and disk support and a compiler in addition to the interpreter. Microsoft marketed QuickBASIC as the introductory level for their BASIC Professional Development System. Microsoft marketed two other similar IDEs for C and Pascal, viz QuickC and QuickPascal.