The 24 surnames begin with R

Raderin (2)
Ragonitz (2)
Rain (3)
Rambauer (1)
Rath (9)
Rauhpriegl (1)
Reichenberger (2)
Reisenleuthner (1)
Reisetbauer (1)
Reiß (3)
Reiter (3)
Reitter (3)
Renner (1)
Rettenbacher (1)
Reuter (1)
Reuther (2)
Richter (2)
Riedl (1)
Riegler (1)
Ripfel (2)
Ripfl (1)
Rohrmanstorfer (2)
Rosenberger (4)
Rupp (1)