Wine is well known to Linux and Mac users for opening up the possibility of running Windows software on their preferred operating system. The self-referentially-named software (Wine Is Not an Emulator) is due for a new release in the next few weeks, but the hoped-for Windows-on-Android support is not yet there.
That said, it is in the pipeline. Wine developers are working on integrating the existing CrossOver Android software into the open source Windows API. This will allow for Windows software to run in Android, but it won’t make it into the up-coming Wine 2.0, and there are limitations.