| Country | Terrain |
| Palau | varying geologically from the high, mountainous main island of Babelthuap to low, coral islands usually fringed by large barrier reefs |
| Panama | interior mostly steep, rugged mountains and dissected, upland plains; coastal areas largely plains and rolling hills |
| Papua New Guinea | mostly mountains with coastal lowlands and rolling foothills |
| Paracel Islands | mostly low and flat |
| Paraguay | grassy plains and wooded hills east of Rio Paraguay; Gran Chaco region west of Rio Paraguay mostly low, marshy plain near the river, and dry forest and thorny scrub elsewhere |
| Peru | western coastal plain (costa), high and rugged Andes in center (sierra), eastern lowland jungle of Amazon Basin (selva) |
| Philippines | mostly mountains with narrow to extensive coastal lowlands |
| Pitcairn Islands | rugged volcanic formation; rocky coastline with cliffs |
| Poland | mostly flat plain; mountains along southern border |
| Portugal | mountainous north of the Tagus River, rolling plains in south |
| Puerto Rico | mostly mountains with coastal plain belt in north; mountains precipitous to sea on west coast; sandy beaches along most coastal areas |
| Qatar | mostly flat and barren desert covered with loose sand and gravel |
| Romania | central Transylvanian Basin is separated from the Moldavian Plateau on the east by the Eastern Carpathian Mountains and separated from the Walachian Plain on the south by the Transylvanian Alps |
| Russia | broad plain with low hills west of Urals; vast coniferous forest and tundra in Siberia; uplands and mountains along southern border regions |
| Rwanda | mostly grassy uplands and hills; relief is mountainous with altitude declining from west to east |
| Saint Barthelemy | hilly, almost completely surrounded by shallow-water reefs, with plentiful beaches |