语音可延伸标记语言（英语：Voice Extensible Markup Language，简称VoiceXML或VXML）是于交互式语音回应应用程序创建音频对话的标准，用于开发音频及声音回应应用程序，例如银行系统及自动客户服务。来自网页服务器的超文本标记语言（HTML）被网页浏览器接收后，网页浏览器能对其进行解析并视觉呈现出来，VoiceXML应用程序的开发及部署也类似这方式。VoiceXML文档由语音浏览器解析。于一般的部署架构之下，用户通常经由公共交换电话网（PSTN）跟语音浏览器交互。VoiceXML文档以XML为基础，是由万维网联盟（W3C）开发的标准。

VoiceXML (VXML) is a digital document standard for specifying interactive media and voice dialogs between humans and computers. It is used for developing audio and voice response applications, such as banking systems and automated customer service portals. VoiceXML applications are developed and deployed in a manner analogous to how a web browser interprets and visually renders the Hypertext Markup Language (HTML) it receives from a web server. VoiceXML documents are interpreted by a voice browser and in common deployment architectures, users interact with voice browsers via the public switched telephone network (PSTN).