开源硬件，指与自由及开放源代码软件相同方式设计的计算机和电子硬件。开源硬件开始考虑对软件以外的领域开源，是开源文化的一部分。

这个词主要是用来反映自由释放详细信息的硬件设计，如电路图、材料清单和电路板布局数据，通常使用开源软件来驱动硬件。

共享逻辑设计连同可程序逻辑器件之重构，也是一种形式的开源硬件。 硬件描述语言代码的共享代替共享电路图。硬件描述语言通常用于系统芯片系统，也用于组件可程序逻辑门数组或直接在专用集成电路中设计。当分配时叫做硬件描述语言模块或 IP cores 。

Open-source hardware (OSH), consists of physical artifacts of technology designed and offered by the open design movement. Both free and open-source software (FOSS) as well as open-source hardware is created by this open-source culture movement and applies a like concept to a variety of components. It is sometimes, thus, referred to as FOSH (free and open-source hardware). The term usually means that information about the hardware is easily discerned so that others can make it - coupling it closely to the maker movement. Hardware design (i.e. mechanical drawings, schematics, bills of material, PCB layout data, HDL source code and integrated circuit layout data), in addition to the software that drives the hardware, are all released under free/libre terms. The original sharer gains feedback and potentially improvements on the design from the FOSH community. There is now significant evidence that such sharing can drive a high return on investment for investors.