| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
2101  | Osádka  Osadka,Osádka | Slovakia, Žilina Region Dolný Kubín District > Osádka | populated place | N 49° 11′ 4'' | E 19° 23′ 18'' |
| 2102 | Orovnica Orovnica | Slovakia, Banská Bystrica Region Žarnovica District > Orovnica | populated place | N 48° 23′ 17'' | E 18° 35′ 40'' |
| 2103 | Orlové Orlove,Orlové | Slovakia, Trenčín Region Považská Bystrica District > Považská Bystrica | populated place | N 49° 7′ 44'' | E 18° 25′ 41'' |
| 2104 | Oreské Oreske,Oreské | Slovakia, Trnava Region Skalica District > Oreské | populated place | N 48° 44′ 39'' | E 17° 18′ 22'' |
| 2105 | Orešany Oresany,Orešany | Slovakia, Nitra Region Topoľčany District > Orešany | populated place | N 48° 30′ 40'' | E 17° 54′ 9'' |
| 2106 | Oravský Biely Potok Oravsky Biely Potok,Oravský Biely Potok | Slovakia, Žilina Region Tvrdošín District > Oravský Biely Potok | populated place | N 49° 17′ 10'' | E 19° 33′ 17'' |
| 2107 | Oravské Veselé Oravske Vesele,Oravské Veselé,Vesele,Veselé | Slovakia, Žilina Region Námestovo District > Oravské Veselé | populated place | N 49° 27′ 57'' | E 19° 23′ 0'' |
| 2108 | Oravská Polhora Oravska Polhora,Oravská Polhora,Polhora | Slovakia, Žilina Region Námestovo District > Oravská Polhora | populated place | N 49° 31′ 37'' | E 19° 26′ 26'' |
2109  | Oravská Magura Oravska Magura,Oravská Magura,Orawa,Orawska Magura | Slovakia, Žilina Region | mountains | N 49° 18′ 12'' | E 19° 23′ 0'' |
| 2110 | Oravská Lesná Erdudka,Erdutka,Erdúdka,Erdútka,Oravska Lesna,Oravská Lesná | Slovakia, Žilina Region Námestovo District > Oravská Lesná | populated place | N 49° 22′ 3'' | E 19° 11′ 3'' |
| 2111 | Oravce Oravce | Slovakia, Banská Bystrica Region Banská Bystrica District > Oravce | populated place | N 48° 41′ 4'' | E 19° 15′ 45'' |
| 2112 | Oponice Oponice | Slovakia, Nitra Region Topoľčany District > Oponice | populated place | N 48° 28′ 7'' | E 18° 8′ 44'' |
| 2113 | Opoj Opoj | Slovakia, Trnava Region Trnava District > Opoj | populated place | N 48° 18′ 7'' | E 17° 38′ 37'' |
| 2114 | Opava Opava | Slovakia, Banská Bystrica Region Veľký Krtíš District > Opava | populated place | N 48° 11′ 45'' | E 19° 10′ 38'' |
| 2115 | Opatovská Nová Ves Apat-Ujfalu,Apát-Ujfalu,Opatovska Nova Ves,Opatovská Nová Ves | Slovakia, Banská Bystrica Region Veľký Krtíš District > Opatovská Nová Ves | populated place | N 48° 6′ 48'' | E 19° 16′ 41'' |
| 2116 | Opatovce nad Nitrou Opatovce nad Nitrou | Slovakia, Trenčín Region Prievidza District > Opatovce nad Nitrou | populated place | N 48° 45′ 52'' | E 18° 34′ 18'' |
| 2117 | Opatovce Opatovce | Slovakia, Trenčín Region Trenčín District > Veľké Bierovce | populated place | N 48° 51′ 28'' | E 17° 58′ 34'' |
| 2118 | Ondrejovce Barsendred,Barsendréd,Endred,Endréd,Ondrejovce | Slovakia, Nitra Region Levice District > Ondrejovce | populated place | N 48° 8′ 15'' | E 18° 31′ 8'' |
| 2119 | Ondrašová Ondrasova,Ondrašová | Slovakia, Žilina Region Turčianske Teplice District > Ondrašová | populated place | N 48° 56′ 33'' | E 18° 48′ 26'' |
| 2120 | Omšenie Omsenie,Omšenie | Slovakia, Trenčín Region Trenčín District > Omšenie | populated place | N 48° 54′ 2'' | E 18° 13′ 32'' |
| 2121 | Omastiná Omastina,Omastiná | Slovakia, Trenčín Region Bánovce nad Bebravou District > Omastiná | populated place | N 48° 46′ 39'' | E 18° 23′ 17'' |
| 2122 | Olováry Olovary,Olováry,Ovar,Óvár | Slovakia, Banská Bystrica Region Veľký Krtíš District > Olováry | populated place | N 48° 9′ 10'' | E 19° 24′ 35'' |
| 2123 | Oľdza Ol'dza,Olgya,Oľdza | Slovakia, Trnava Region Dunajská Streda District > Oľdza | populated place | N 48° 5′ 7'' | E 17° 25′ 24'' |
| 2124 | Očová Ocova,Očová | Slovakia, Banská Bystrica Region Zvolen District > Očová | populated place | N 48° 36′ 1'' | E 19° 17′ 18'' |
| 2125 | Očkov Ockov,Očkov | Slovakia, Trenčín Region Nové Mesto nad Váhom District > Očkov | populated place | N 48° 39′ 10'' | E 17° 45′ 57'' |
| 2126 | Ochodnica Ochodnica | Slovakia, Žilina Region Kysucké Nové Mesto District > Ochodnica | populated place | N 49° 20′ 56'' | E 18° 47′ 22'' |
| 2127 | Obyce Obyce | Slovakia, Nitra Region Zlaté Moravce District > Obyce | populated place | N 48° 25′ 38'' | E 18° 27′ 22'' |
| 2128 | Obeckov Obeckov | Slovakia, Banská Bystrica Region Veľký Krtíš District > Obeckov | populated place | N 48° 10′ 11'' | E 19° 19′ 55'' |
| 2129 | Nýrovce Nirovce,Nyir,Nyirago,Nyrovce,Nyírágó,Nírovce,Nýrovce | Slovakia, Nitra Region Levice District > Nýrovce | populated place | N 48° 1′ 30'' | E 18° 34′ 55'' |
| 2130 | Nový Tekov Novy Tekov,Nový Tekov,Uj-Bars,Új-Bars | Slovakia, Nitra Region Levice District > Nový Tekov | populated place | N 48° 14′ 50'' | E 18° 31′ 1'' |
| 2131 | Novoť Novot',Novoť | Slovakia, Žilina Region Námestovo District > Novoť | populated place | N 49° 25′ 42'' | E 19° 15′ 55'' |
| 2132 | Nové Sady Asakert',Ašakerť,Nove Sady,Nové Sady | Slovakia, Nitra Region Topoľčany District > Malé Ripňany | populated place | N 48° 25′ 2'' | E 17° 58′ 54'' |
| 2133 | Nové Rastislavice Nove Rastislavice,Novy Deges,Nové Rastislavice,Nový Degeš | Slovakia, Nitra Region Nové Zámky District > Rastislavice | populated place | N 48° 7′ 48'' | E 18° 5′ 57'' |
| 2134 | Nová Vieska Kis-Ujfalu,Kis-Újfalu,Nova Vieska,Nová Vieska | Slovakia, Nitra Region Nové Zámky District > Nová Vieska | populated place | N 47° 52′ 10'' | E 18° 27′ 45'' |
| 2135 | Nová Ves nad Žitavou Nova Ves nad Zitavou,Nová Ves nad Žitavou | Slovakia, Nitra Region Nitra District > Nová Ves nad Žitavou | populated place | N 48° 17′ 25'' | E 18° 19′ 23'' |
| 2136 | Nová Ves nad Váhom Nova Ves nad Vahom,Nová Ves nad Váhom | Slovakia, Trenčín Region Nové Mesto nad Váhom District > Nová Ves nad Váhom | populated place | N 48° 43′ 49'' | E 17° 53′ 21'' |
| 2137 | Nová Ves Nova Ves,Nová Ves | Slovakia, Banská Bystrica Region Veľký Krtíš District > Nová Ves | populated place | N 48° 10′ 9'' | E 19° 21′ 58'' |
| 2138 | Nová Lehota Nova Lehota,Nová Lehota | Slovakia, Trenčín Region Nové Mesto nad Váhom District > Nová Lehota | populated place | N 48° 39′ 27'' | E 17° 58′ 49'' |
| 2139 | Nováky Navaky,Novaky,Nováky | Slovakia, Trenčín Region Prievidza District > Nováky | seat of a third-order administrative division population 4,402 | N 48° 42′ 39'' | E 18° 32′ 2'' |
| 2140 | Norovce Norovce | Slovakia, Nitra Region Topoľčany District > Norovce | populated place | N 48° 37′ 51'' | E 18° 10′ 52'' |
| 2141 | Nolčovo Nolcovo,Nolčovo | Slovakia, Žilina Region Martin District > Nolčovo | populated place | N 49° 6′ 27'' | E 19° 4′ 46'' |
| 2142 | Nižný Skálnik Nizni Skalnik,Nizny Skalnik,Nižní Skálnik,Nižný Skálnik | Slovakia, Banská Bystrica Region Okres Rimavská Sobota > Nižný Skálnik | populated place | N 48° 27′ 13'' | E 19° 58′ 14'' |
| 2143 | Nižné Malatíny Malatiny,Malatíny,Nizne Malatiny,Niznie Malatiny,Nižnie Malatíny,Nižné Malatíny | Slovakia, Žilina Region Okres Liptovský Mikuláš > Malatíny | populated place | N 49° 4′ 9'' | E 19° 27′ 33'' |
| 2144 | Nižná Boca Nizna Boca,Niznia Boca,Nižnia Boca,Nižná Boca | Slovakia, Žilina Region Okres Liptovský Mikuláš > Nižná Boca | populated place | N 48° 56′ 53'' | E 19° 46′ 10'' |
| 2145 | Nižná Nizna,Nižná | Slovakia, Trnava Region Piešťany District > Nižná | populated place | N 48° 31′ 58'' | E 17° 39′ 1'' |
| 2146 | Nízke Tatry Low Tatra,Nezke Tatry,Nizke Tatry,Nizne Tatry,Nézké Tatry,Nízke Tatry,Nížné Tatry | Slovakia, Žilina Region | mountains | N 48° 54′ 36'' | E 19° 51′ 44'' |
| 2147 | Nitriansky Hrádok Kisvarad,Kisvárad,Maly Varad,Malý Várad,Nitriansky Hradok,Nitriansky Hrádok,Venera z Nitrjans'kogo G... | Slovakia, Nitra Region Nové Zámky District > Šurany | populated place | N 48° 4′ 14'' | E 18° 12′ 18'' |
| 2148 | Nitrianske Sučany Nitrianske Sucany,Nitrianske Sučany,Sucany,Sučany | Slovakia, Trenčín Region Prievidza District > Nitrianske Sučany | populated place | N 48° 44′ 0'' | E 18° 28′ 6'' |
| 2149 | Nitrianske Rudno Nitrianske Rudno | Slovakia, Trenčín Region Prievidza District > Nitrianske Rudno | populated place | N 48° 47′ 43'' | E 18° 28′ 38'' |
| 2150 | Nitrianske Hrnčiarovce Hrnciarovce,Hrnčiarovce,Nitrianske Hrnciarovce,Nitrianske Hrnčiarovce | Slovakia, Nitra Region Nitra District > Nitrianske Hrnčiarovce | populated place | N 48° 19′ 58'' | E 18° 7′ 42'' |
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