I think the Wikipedia article addresses your question directly:
https://en.wikipedia.org/wiki/Führer
If you are using the title in a profile, it's not really necessary to translate it. WikiTree would support the German spelling, and everyone would most likely recognize it.
Edit: But it looks like G2G doesn't support my link, so I stand corrected about that:
https://en.wikipedia.org/wiki/F%C3%BChrer