The answer is yes. But that's probably not your real question I assume. Just like any other operating system, if you have the source code and the hardware drivers for your particular micro, you can compile it and run it. There are SBCs with Intel and compatible X86 micros on them that could run specific versions of Windows, but the drivers may not be available for hardware GPIO and such. If you are really good at OS simulation you could probably run a VM on any machine (even a R-Pi), but I would suspect the memory requirements might be too much.
There are many PC-104 and mini-ITX motherboards running windows.
