Yes, I have a Nikkor F to µ4/3 adapter with tripod mount.
Got it from Fotodiox, it's their "Pro" series and available for different lensmounts.
Be forewarned however ! The first one I received did not focus to infinity at all. Filed a complaint, received a replacement one last week. I haven't had the possibility to seriously test it yet. Looks better, but I'm not convinced that it really hits infinity !