组装电脑（或称组装机），是指一部自行购置各项电脑硬件组装而成的电脑。

• 中国大陆：「DIY」、兼容机、组装机、攒机
• 香港：「砌机」、黄金机（因大多购自高登电脑中心与黄金电脑商场）
• **：「DIY」（Do It Yourself）、光华牌

A custom-built or homebuilt computer is a computer assembled from available components, usually commercial off-the-shelf (COTS) components, rather than purchased as a complete system from a computer system supplier.

Homebuilt computers are almost always used at home, like home computers, but home computers were traditionally purchased already assembled by the manufacturer. However, there were kits that were both home computers and homebuilt computers, like the Newbear 77-68, which the owner was expected to assemble and use in his or her home.