Frohnau
Frohnau is the name:
- a district of the Berlin district of Reinickendorf; see Berlin-Frohnau
- a district of Annaberg-Buchholz; see Frohnau (Annaberg-Buchholz)
- Vranov u Mnichova , part of Mnichov, Czech Republic
- of the abandoned village Vranov in the municipality of Rovná u Sokolova , Czech Republic