- rossThe rough, scaly surface on the bark of trees.
- rhosA village in Cilybebyll community, Neath Port Talbot borough, Wales (OS grid ref SN7303).
- RhooseA village and community (without a council) in Vale of Glamorgan borough county borough, Wales (OS grid ref ST0666).
- RhosllanerchrugogA large village and community in Wrexham borough, Wales (OS grid ref SJ2946).
- roslandMoorish or watery land.