AGP，全称为加速图形接口（Accelerated Graphics Port），是电脑主板上的一种高速点对点传输信道，供显卡使用，主要应用在三维电脑图形的加速上。AGP是在1997年由Intel提出，是从PCI标准上创建起来，是一种显卡专用接口。推出原因是为了消除PCI在处理3D图形时的瓶颈。AGP通常会被视为计算机总线的一种，但这样的分法严格来说是错误的；因为一组总线可容许多个设备共用，而AGP却不是。AGP不能多个插槽共用一组总线。一些主板设有多条独立的AGP插槽，现时AGP已基本被PCI Express所取代。

The Accelerated Graphics Port (often shortened to AGP) is a high-speed point-to-point channel for attaching a video card to a computer system, primarily to assist in the acceleration of 3D computer graphics. It was originally designed as a successor to PCI-type connections for video cards. Since 2004, AGP has been progressively phased out in favor of PCI Express (PCIe); by mid-2008, PCI Express cards dominated the market and only a few AGP models were available.