丰富互联网应用进程（英语：Rich Internet applications，简称RIA），又译为丰富性网络应用服务，是一种具有近似于传统桌面应用软件系统功能和特性的网络应用系统。RIA系统最大的特点是将大部分处理任务都从用户界面端移植到客户端，仅保留一些必要数据与服务器端进行信息交互。 RIA系统的特性：

A rich Internet application (RIA; sometimes called an Installable Internet Application) is a Web application that has many of the characteristics of desktop application software, typically delivered by way of a site-specific browser, a browser plug-in, an independent sandbox, extensive use of JavaScript, or a virtual machine. Adobe Flash, JavaFX, and Microsoft Silverlight are currently the three most common platforms, with desktop browser penetration rates around 96%, 76%, and 66%, respectively (as of August 2011).