| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1401  | Isafotra | Madagascar, Alaotra Mangoro | stream | S 18° 42′ 0'' | E 47° 58′ 0'' |
| 1402 | Irony | Madagascar, Sofia | stream | S 14° 43′ 0'' | E 48° 7′ 0'' |
1403  | Ironona Irohono,Ironona | Madagascar, Diana Antsiranana II > Andranofanjava > Ironona | populated place | S 12° 23′ 0'' | E 48° 58′ 0'' |
| 1404 | Irondro  Irondra,Irondro,ayrwndrw,ایروندرو | Madagascar, Vatovavy Region Mananjary > Antsenavolo > Irondro | populated place | S 21° 24′ 0'' | E 47° 59′ 0'' |
| 1405 | Iromba | Madagascar, Sofia | stream | S 15° 19′ 0'' | E 48° 48′ 0'' |
| 1406 | Baie Mahalevona Baie Mahalevona,Baie d' Irodo,Baie du Rodo,Baie d’ Irodo,Helodranon' Irodo,Helodranon’ Irodo,Mahaval... | Madagascar, MG.01 | bay | S 12° 39′ 0'' | E 49° 35′ 0'' |
| 1407 | Irodo Irodo,Irodo River,Rodo | Madagascar, MG.01 | stream | S 12° 39′ 0'' | E 49° 34′ 0'' |
| 1408 | Irodo Irodo,Rodo | Madagascar, Diana Antsiranana II > Ankarongana > Irodo | populated place | S 12° 39′ 0'' | E 49° 31′ 0'' |
| 1409 | Irizo | Madagascar, Androy Ambovombe District > Antanimora Atsimo > Andemby Analamaiky | populated place | S 24° 49′ 0'' | E 45° 44′ 0'' |
| 1410 | Iritsoka | Madagascar, Anosy | stream | S 23° 11′ 0'' | E 45° 57′ 0'' |
| 1411 | Iritsoka | Madagascar, Anosy Betroka > Ambalasoa > Iritsoka | populated place | S 23° 5′ 0'' | E 46° 4′ 0'' |
| 1412 | Irindra | Madagascar, Analamanga Ankazobe > Tsaramasoandro > Irindravato | populated place | S 17° 48′ 0'' | E 47° 6′ 0'' |
| 1413 | Irina Irina,Riana | Madagascar, Anosy | stream | S 23° 40′ 0'' | E 46° 9′ 0'' |
| 1414 | Irina | Madagascar, Ihorombe Ihosy > Irina > Irina | populated place | S 22° 26′ 0'' | E 46° 6′ 0'' |
| 1415 | Irijy-Soaserana | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Tsinjorano | populated place | S 22° 16′ 0'' | E 45° 2′ 0'' |
| 1416 | Irijy-Soaserana | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Ankilivalokely | populated place | S 22° 16′ 0'' | E 44° 59′ 0'' |
| 1417 | Irijy | Madagascar, Atsimo-Andrefana | stream | S 21° 28′ 0'' | E 44° 52′ 0'' |
1418  | Irijy | Madagascar, Atsimo-Andrefana Ankazoabo > Ilemby > Ankaboka Bara | hill | S 22° 26′ 0'' | E 44° 54′ 0'' |
| 1419 | Irihitra | Madagascar, Itasy | stream | S 18° 58′ 0'' | E 47° 8′ 0'' |
| 1420 | Irihitra | Madagascar, Atsinanana | stream | S 18° 30′ 0'' | E 48° 46′ 0'' |
| 1421 | Iriana | Madagascar, Analanjirofo Nosy Boraha > Sainte Marie > Agnivorano | populated place | S 16° 49′ 0'' | E 49° 56′ 0'' |
| 1422 | Irevo Irevo,Trevo | Madagascar, Atsimo-Andrefana | stream | S 21° 42′ 0'' | E 44° 57′ 0'' |
| 1423 | Irevo | Madagascar, Atsimo-Andrefana Beroroha > Fanjakana > Manamby | populated place | S 21° 42′ 0'' | E 44° 57′ 0'' |
| 1424 | Iravoandriana | Madagascar, Analamanga Antananarivo Avaradrano > Anjeva Gara > Imaola Vohitsara | populated place | S 18° 58′ 0'' | E 47° 40′ 0'' |
| 1425 | Irarona Iraro,Irarona | Madagascar, Diana Ambilobe > Beramanja > Irarona | populated place | S 13° 24′ 0'' | E 48° 55′ 0'' |
| 1426 | Irarazy | Madagascar, Ihorombe Iakora > Iakora > Rarazy | populated place | S 23° 16′ 0'' | E 46° 41′ 0'' |
| 1427 | Iranotsara | Madagascar, Upper Matsiatra Lalangina > Sahambavy > Imorona | populated place | S 21° 28′ 0'' | E 47° 21′ 0'' |
| 1428 | Iranomena | Madagascar, Upper Matsiatra Lalangina > Alatsinainy Ialamarina > Ranomena | populated place | S 21° 28′ 0'' | E 47° 23′ 0'' |
| 1429 | Iranjo Ruisseau | Madagascar, Ihorombe | stream | S 22° 29′ 0'' | E 45° 50′ 0'' |
| 1430 | Nosy Iranja Island | Madagascar, Diana | island | S 13° 35′ 41'' | E 47° 49′ 1'' |
| 1431 | Lac Irangy | Madagascar, Atsinanana | lake | S 18° 31′ 25'' | E 49° 15′ 22'' |
| 1432 | Irangotsy | Madagascar, Atsimo-Andrefana | stream | S 23° 42′ 0'' | E 44° 37′ 0'' |
| 1433 | Irangedaloy | Madagascar, Ihorombe | stream | S 23° 26′ 0'' | E 46° 35′ 0'' |
1434  | Irangahy | Madagascar, Menabe Manja > Andranopasy > Tsianihy | locality | S 21° 10′ 0'' | E 43° 58′ 0'' |
| 1435 | Iranana | Madagascar, Fitovinany Region | stream | S 22° 16′ 0'' | E 47° 46′ 0'' |
| 1436 | Presqu’île Irampo Irampo Peninsula,Presqu'ile Irampo,Presqu’île Irampo | Madagascar, Diana | peninsula | S 12° 25′ 0'' | E 49° 32′ 0'' |
| 1437 | Iraho | Madagascar, Anosy | stream | S 25° 2′ 0'' | E 46° 52′ 0'' |
| 1438 | Ipoy | Madagascar, Androy Bekily District > Bekitro Commune > Sakoantsoa | populated place | S 24° 37′ 0'' | E 45° 16′ 0'' |
| 1439 | Iponolaka | Madagascar, Fitovinany Region Manakara > Vinanitelo > Morafeno | populated place | S 22° 1′ 0'' | E 47° 46′ 0'' |
| 1440 | Ipongy Rivière | Madagascar, Vakinankaratra | stream | S 19° 50′ 0'' | E 46° 30′ 0'' |
| 1441 | Ipongy Iponga,Iponga Riviere,Iponga Rivière,Ipongy | Madagascar, Vakinankaratra | stream | S 19° 49′ 0'' | E 46° 26′ 0'' |
| 1442 | Ipingo Ipingo,Ipongo | Madagascar, Atsimo-Andrefana Beroroha > Bemavo > Ipingo | populated place | S 21° 43′ 0'' | E 45° 15′ 0'' |
| 1443 | Ipiko | Madagascar, Androy Bekily District > Bevitiky > Beangily | populated place | S 24° 41′ 0'' | E 45° 22′ 0'' |
| 1444 | Ipetsa Avaratra Ipetsa Avaratra,Ipetsa Nord | Madagascar, Atsimo-Andrefana Beroroha > Behisatsy > Ampandra | populated place | S 22° 2′ 0'' | E 44° 55′ 0'' |
| 1445 | Ipetsa Atsimo Ampetsa,Ipetsa Atsimo,Ipetsa Sud | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Ipetsa Ankoabe | populated place | S 22° 3′ 0'' | E 44° 57′ 0'' |
| 1446 | Ipanda | Madagascar, Vakinankaratra Mandoto > Vasiana > Amparihy Bara | populated place | S 19° 49′ 0'' | E 46° 23′ 0'' |
| 1447 | Ipaka Rivière | Madagascar, Upper Matsiatra | stream | S 21° 29′ 0'' | E 46° 41′ 0'' |
| 1448 | Ipaka | Madagascar, Upper Matsiatra Ikalamavony > Solila > Ipaka | populated place | S 21° 26′ 0'' | E 46° 46′ 0'' |
| 1449 | Lac Iotry | Madagascar, Atsimo-Andrefana | intermittent lake | S 23° 31′ 0'' | E 44° 20′ 0'' |
| 1450 | Iotry | Madagascar, Androy Beloha District > Kopoky > Iotry | populated place | S 25° 6′ 0'' | E 45° 17′ 0'' |
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