在计算机科学中，随机访问机器（英语：Random-access machine，缩写为RAM）是一种抽象机器，属于寄存器机的一种。它近似于计数器机，但是它拥有能对暂存器间接寻址的能力。

In computer science, random-access machine (RAM) is an abstract machine in the general class of register machines. The RAM is very similar to the counter machine but with the added capability of 'indirect addressing' of its registers. Like the counter machine the RAM has its instructions in the finite-state portion of the machine (the so-called Harvard architecture).