| Country | Terrain |
| New Caledonia | coastal plains with interior mountains |
| New Zealand | predominately mountainous with some large coastal plains |
| Nicaragua | extensive Atlantic coastal plains rising to central interior mountains; narrow Pacific coastal plain interrupted by volcanoes |
| Niger | predominately desert plains and sand dunes; flat to rolling plains in south; hills in north |
| Nigeria | southern lowlands merge into central hills and plateaus; mountains in southeast, plains in north |
| Niue | steep limestone cliffs along coast, central plateau |
| Norfolk Island | volcanic formation with mostly rolling plains |
| Northern Mariana Islands | southern islands are limestone with level terraces and fringing coral reefs; northern islands are volcanic |
| Norway | glaciated; mostly high plateaus and rugged mountains broken by fertile valleys; small, scattered plains; coastline deeply indented by fjords; arctic tundra in north |
| Oman | central desert plain, rugged mountains in north and south |
| Pacific Ocean | surface currents in the northern Pacific are dominated by a clockwise, warm-water gyre (broad circular system of currents) and in the southern Pacific by a counterclockwise, cool-water gyre; in the northern Pacific, sea ice forms in the Bering Sea and Sea of Okhotsk in winter; in the southern Pacific, sea ice from Antarctica reaches its northernmost extent in October; the ocean floor in the eastern Pacific is dominated by the East Pacific Rise, while the western Pacific is dissected by deep trenches, including the Mariana Trench, which is the world's deepest |
| Pakistan | flat Indus plain in east; mountains in north and northwest; Balochistan plateau in west |
| 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 Plain of Moldavia on the east by the 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 20 beaches |
| Saint Helena | the islands of this group result from volcanic activity associated with the Atlantic Mid-Ocean Ridge
Saint Helena: rugged, volcanic; small scattered plateaus and plains
Ascension: surface covered by lava flows and cinder cones of 44 dormant volcanoes; ground rises to the east
Tristan da Cunha: sheer cliffs line the coastline of the nearly circular island; the flanks of the central volcanic peak are deeply dissected; narrow coastal plain lies between The Peak and the coastal cliffs |
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