| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
4001  | San Benito | Peru, Moquegua Department | area | S 17° 31′ 0'' | W 71° 21′ 0'' |
| 4002 | San Bartólome | Peru, Arequipa Caylloma Province | locality | S 15° 39′ 36'' | W 71° 24′ 54'' |
4003  | San Bartolo San Bartolo,Сан Бартоло | Peru, Lima region Lima > San Bartolo | seat of a third-order administrative division population 5,733 | S 12° 23′ 0'' | W 76° 47′ 0'' |
| 4004 | Hacienda San Aurelio Hacienda San Aurelio,San Aurelio,San Aurelio Hacienda | Peru, Ica Provincia de Chincha > El Carmen | populated place | S 13° 30′ 12'' | W 76° 6′ 55'' |
4005  | Cerros San Antonio Cerro San Antonio,Cerros San Antonio | Peru, Arequipa | mountains | S 15° 33′ 50'' | W 73° 57′ 21'' |
| 4006 | San Antonio de Vizcas Hacienda San Antonio de Viscas,San Antonio,San Antonio Hacienda,San Antonio de Vizcas | Peru, Ica Palpa Province > Palpa | populated place | S 14° 32′ 52'' | W 75° 11′ 22'' |
| 4007 | San António Hacienda San Antonio,San Antonio,San Antonio Hacienda,San António | Peru, Ica Provincia de Chincha > Chincha Baja | populated place population 2 | S 13° 28′ 46'' | W 76° 10′ 12'' |
| 4008 | Cerro San Antonio Cerro San Antonio,San Antonio | Peru, Arequipa Caravelí Province > Quicacha | mountain elevation 3513m | S 15° 35′ 48'' | W 73° 40′ 53'' |
| 4009 | Quebrada Contayani Cerro San Andres,Cerro San Andrés,Quebrada Contayani | Peru, Arequipa Islay Province > Islay | mountain | S 16° 56′ 44'' | W 72° 5′ 8'' |
| 4010 | Cerro San Andrés Cerro San Andres,Cerro San Andrés | Peru, Arequipa Caravelí Province > Chaparra | mountain | S 15° 37′ 19'' | W 73° 54′ 34'' |
| 4011 | San Andrés Hacienda San Andres,San Andres,San Andres Hacienda,San Andrés,San Andrés Hacienda | Peru, Lima region Cañete Province > Santa Cruz De Flores | populated place | S 12° 34′ 48'' | W 76° 40′ 2'' |
| 4012 | Hacienda San Agustín Hacienda San Agustin,Hacienda San Agustín,San Agustin,San Agustin Hacienda,San Agustín | Peru, Callao Callao > Callao | populated place | S 12° 1′ 43'' | W 77° 7′ 3'' |
| 4013 | San Agustin San Agustin,San Agustin de Cajas,San Agustín,San Agustín de Cajas | Peru, Junin Huancayo Province > San Agustin | seat of a third-order administrative division population 5,998 | S 11° 59′ 24'' | W 75° 14′ 39'' |
| 4014 | Samicucho Sami,Sami Hacienda,Samicucho | Peru, Cuzco Department Canchis Province > Checacupe | populated place | S 14° 4′ 32'' | W 71° 7′ 46'' |
| 4015 | Cerro Sambalay Chico Cerro Sambalay,Cerro Sambalay Chico | Peru, Tacna Provincia de Tacna > Inclan | mountain | S 17° 33′ 2'' | W 70° 22′ 26'' |
4016  | Laguna Samaccota | Peru, Arequipa | lake | S 15° 24′ 23'' | W 71° 22′ 35'' |
| 4017 | Punta Chorrillos Chorillos Point,Salto del Fraile,Salto del Frayle | Peru, Lima region Lima > Chorrillos | point | S 12° 10′ 3'' | W 77° 2′ 17'' |
| 4018 | Punta Salto del Frayle Punta Salto del Fraile,Punta Salto del Frayle,Salto del Fraile | Peru, Ancash Huarmey Province > Huarmey | point | S 10° 22′ 39'' | W 78° 0′ 35'' |
| 4019 | Sallipucro Sallipucro | Peru, Arequipa Castilla Province | locality | S 15° 12′ 35'' | W 72° 0′ 50'' |
| 4020 | Salitre Hacienda Salitre,Salitre,Salitre Hacienda | Peru, Lima region Cañete Province > Mala | populated place population 118 | S 12° 41′ 0'' | W 76° 39′ 0'' |
| 4021 | Promontorio Salinas Promontorio Salinas,Promontorio de Salinas,Salinas Promontory | Peru, Lima region | cape | S 11° 15′ 0'' | W 77° 39′ 0'' |
| 4022 | Salina Grande Salina Grande | Peru, Arequipa Caravelí Province > Atico | locality | S 16° 9′ 9'' | W 73° 49′ 34'' |
| 4023 | Saihua | Peru, Cuzco Department | area | S 13° 18′ 0'' | W 72° 6′ 0'' |
| 4024 | Sahuani Hacienda Sahuani,Sahuani,Sahuani Hacienda | Peru, Arequipa Camaná Province > Nicolas De Pierola | populated place population 127 | S 16° 23′ 16'' | W 72° 30′ 7'' |
| 4025 | Sahuaipunco | Peru, Lima region | area | S 12° 1′ 0'' | W 76° 25′ 0'' |
| 4026 | Laguna Saguanani | Peru, Puno | lake | S 15° 14′ 30'' | W 70° 55′ 55'' |
| 4027 | Sagape | Peru, Huancavelica Angaraes Province | locality | S 13° 16′ 7'' | W 74° 41′ 4'' |
| 4028 | Sacuyo Sacuye,Sacuye Hacienda,Sacuyo,Socuyo | Peru, Puno Puno Province > Acora | populated place population 452 | S 16° 9′ 12'' | W 69° 53′ 39'' |
| 4029 | Sacsahuite | Peru, Cuzco Department | area | S 13° 25′ 0'' | W 72° 15′ 0'' |
| 4030 | Hacienda Sacramento Hacienda Sacramento,Sacramento,Sacramento Hacienda | Peru, Arequipa Castilla Province > Uraca | populated place | S 16° 12′ 27'' | W 72° 27′ 58'' |
| 4031 | Laguna Sacracota | Peru, Arequipa | lake | S 15° 25′ 16'' | W 72° 32′ 28'' |
| 4032 | Sacharajay Sacharaccay,Sacharajay,Sacharaqay,Scharajay | Peru, Ayacucho La Mar Province > Anco | populated place | S 13° 4′ 52'' | W 73° 50′ 55'' |
| 4033 | Sacachi | Peru, Puno El Collao Province | locality | S 16° 47′ 7'' | W 69° 41′ 44'' |
| 4034 | Ruruma | Peru, Arequipa Castilla Province | locality | S 15° 44′ 6'' | W 72° 24′ 44'' |
| 4035 | Ruquia Hacienda Ruquia,Ruquia,Ruquia Hacienda | Peru, Lima region Huaura Province > Vegueta | populated place population 58 | S 11° 2′ 28'' | W 77° 38′ 14'' |
| 4036 | Cerro Runtu Runtu Cerro Runtu Runtu | Peru, Ica | mountain elevation 3950m | S 13° 53′ 32'' | W 75° 14′ 23'' |
| 4037 | Cerro Runtun Cerro Runtun,Cerro Runtuni | Peru, Lima region Provincia de Yauyos > Viñac | mountain | S 12° 51′ 31'' | W 75° 40′ 56'' |
| 4038 | Runatillo Pampa Runatillo Pampa,Runatullo,Runatullu Hacienda | Peru, Junin Concepción Province > Comas | populated place | S 11° 38′ 49'' | W 74° 57′ 57'' |
| 4039 | Rumitía Hacienda Rumitia,Rumitia,Rumitia Hacienda,Rumitía | Peru, Puno Lampa Province > Santa Lucia | populated place | S 15° 39′ 53'' | W 70° 46′ 13'' |
| 4040 | Ruelas | Peru, Puno Lampa Province | locality | S 15° 15′ 43'' | W 70° 30′ 39'' |
| 4041 | Cerro Romerillo Cerro Romerillo,Cerro de Romerillo | Peru, Arequipa Caravelí Province > Bella Union | mountain | S 15° 15′ 43'' | W 74° 46′ 29'' |
| 4042 | Roma Pueblo Nuevo Roma,Roma,Roma Hacienda | Peru, Lima region Cañete Province > Nuevo Imperial | populated place | S 13° 1′ 13'' | W 76° 21′ 10'' |
| 4043 | Cerro Rocón Pedroso Cerro Rocon,Cerro Rocon Pedroso,Cerro Rocón,Cerro Rocón Pedroso | Peru, Lima region Lima > Ancon | mountain elevation 1802m | S 11° 35′ 6'' | W 77° 2′ 5'' |
| 4044 | Isla Rivero Isla Jaspiqui,Isla Rivero,Isla Ustute,Isla de Rivero | Peru, Puno | island | S 15° 22′ 3'' | W 69° 37′ 38'' |
| 4045 | Río Grande Rio Grande,Río Grande | Peru, Ica Palpa Province > Rio Grande | populated place population 4,689 | S 14° 30′ 57'' | W 75° 11′ 57'' |
| 4046 | Rinramayo | Peru, Arequipa Caylloma Province | locality | S 15° 46′ 18'' | W 71° 24′ 38'' |
| 4047 | Laguna Rinconada Laguna Rinconada | Peru, Puno | lake | S 14° 38′ 50'' | W 69° 29′ 13'' |
| 4048 | Rinconada | Peru, Ayacucho Lucanas Province | locality | S 14° 27′ 33'' | W 74° 53′ 37'' |
| 4049 | Rímac  Rimac,Rímac | Peru, Lima region Lima > Breña | section of populated place | S 12° 1′ 32'' | W 77° 1′ 56'' |
| 4050 | Ricardo Palma Ricardo Palma | Peru, Lima region Huarochirí Province > Santa Eulalia | populated place population 4,842 | S 11° 55′ 11'' | W 76° 39′ 21'' |
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