| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
451  | Iromba | Madagascar, Sofia | stream | S 15° 19′ 0'' | E 48° 48′ 0'' |
| 452 | 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'' |
| 453 | Irodo  Irodo,Irodo River,Rodo | Madagascar, MG.01 | stream | S 12° 39′ 0'' | E 49° 34′ 0'' |
454  | Irodo Irodo,Rodo | Madagascar, Diana Antsiranana II > Ankarongana > Irodo | populated place | S 12° 39′ 0'' | E 49° 31′ 0'' |
| 455 | Irizo | Madagascar, Androy Ambovombe District > Antanimora Atsimo > Andemby Analamaiky | populated place | S 24° 49′ 0'' | E 45° 44′ 0'' |
| 456 | Iritsoka | Madagascar, Anosy | stream | S 23° 11′ 0'' | E 45° 57′ 0'' |
| 457 | Iritsoka | Madagascar, Anosy Betroka > Ambalasoa > Iritsoka | populated place | S 23° 5′ 0'' | E 46° 4′ 0'' |
| 458 | Irindra | Madagascar, Analamanga Ankazobe > Tsaramasoandro > Irindravato | populated place | S 17° 48′ 0'' | E 47° 6′ 0'' |
| 459 | Irina Irina,Riana | Madagascar, Anosy | stream | S 23° 40′ 0'' | E 46° 9′ 0'' |
| 460 | Irina | Madagascar, Ihorombe Ihosy > Irina > Irina | populated place | S 22° 26′ 0'' | E 46° 6′ 0'' |
| 461 | Irijy-Soaserana | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Tsinjorano | populated place | S 22° 16′ 0'' | E 45° 2′ 0'' |
| 462 | Irijy-Soaserana | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Ankilivalokely | populated place | S 22° 16′ 0'' | E 44° 59′ 0'' |
| 463 | Irijy | Madagascar, Atsimo-Andrefana | stream | S 21° 28′ 0'' | E 44° 52′ 0'' |
464  | Irijy | Madagascar, Atsimo-Andrefana Ankazoabo > Ilemby > Ankaboka Bara | hill | S 22° 26′ 0'' | E 44° 54′ 0'' |
| 465 | Irihitra | Madagascar, Itasy | stream | S 18° 58′ 0'' | E 47° 8′ 0'' |
| 466 | Irihitra | Madagascar, Atsinanana | stream | S 18° 30′ 0'' | E 48° 46′ 0'' |
| 467 | Iriana | Madagascar, Analanjirofo Nosy Boraha > Sainte Marie > Agnivorano | populated place | S 16° 49′ 0'' | E 49° 56′ 0'' |
| 468 | Irevo Irevo,Trevo | Madagascar, Atsimo-Andrefana | stream | S 21° 42′ 0'' | E 44° 57′ 0'' |
| 469 | Irevo | Madagascar, Atsimo-Andrefana Beroroha > Fanjakana > Manamby | populated place | S 21° 42′ 0'' | E 44° 57′ 0'' |
| 470 | Iravoandriana | Madagascar, Analamanga Antananarivo Avaradrano > Anjeva Gara > Imaola Vohitsara | populated place | S 18° 58′ 0'' | E 47° 40′ 0'' |
| 471 | Irarona Iraro,Irarona | Madagascar, Diana Ambilobe > Beramanja > Irarona | populated place | S 13° 24′ 0'' | E 48° 55′ 0'' |
| 472 | Irarazy | Madagascar, Ihorombe Iakora > Iakora > Rarazy | populated place | S 23° 16′ 0'' | E 46° 41′ 0'' |
| 473 | Iranotsara | Madagascar, Upper Matsiatra Lalangina > Sahambavy > Imorona | populated place | S 21° 28′ 0'' | E 47° 21′ 0'' |
| 474 | Iranomena | Madagascar, Upper Matsiatra Lalangina > Alatsinainy Ialamarina > Ranomena | populated place | S 21° 28′ 0'' | E 47° 23′ 0'' |
| 475 | Iranjo Ruisseau | Madagascar, Ihorombe | stream | S 22° 29′ 0'' | E 45° 50′ 0'' |
| 476 | Nosy Iranja Island | Madagascar, Diana | island | S 13° 35′ 41'' | E 47° 49′ 1'' |
| 477 | Lac Irangy | Madagascar, Atsinanana | lake | S 18° 31′ 25'' | E 49° 15′ 22'' |
| 478 | Irangotsy | Madagascar, Atsimo-Andrefana | stream | S 23° 42′ 0'' | E 44° 37′ 0'' |
| 479 | Irangedaloy | Madagascar, Ihorombe | stream | S 23° 26′ 0'' | E 46° 35′ 0'' |
480  | Irangahy | Madagascar, Menabe Manja > Andranopasy > Tsianihy | locality | S 21° 10′ 0'' | E 43° 58′ 0'' |
| 481 | Iranana | Madagascar, Fitovinany Region | stream | S 22° 16′ 0'' | E 47° 46′ 0'' |
| 482 | Presqu’île Irampo Irampo Peninsula,Presqu'ile Irampo,Presqu’île Irampo | Madagascar, Diana | peninsula | S 12° 25′ 0'' | E 49° 32′ 0'' |
| 483 | Iraho | Madagascar, Anosy | stream | S 25° 2′ 0'' | E 46° 52′ 0'' |
| 484 | Ipoy | Madagascar, Androy Bekily District > Bekitro Commune > Sakoantsoa | populated place | S 24° 37′ 0'' | E 45° 16′ 0'' |
| 485 | Iponolaka | Madagascar, Fitovinany Region Manakara > Vinanitelo > Morafeno | populated place | S 22° 1′ 0'' | E 47° 46′ 0'' |
| 486 | Ipongy Rivière | Madagascar, Vakinankaratra | stream | S 19° 50′ 0'' | E 46° 30′ 0'' |
| 487 | Ipongy Iponga,Iponga Riviere,Iponga Rivière,Ipongy | Madagascar, Vakinankaratra | stream | S 19° 49′ 0'' | E 46° 26′ 0'' |
| 488 | Ipingo Ipingo,Ipongo | Madagascar, Atsimo-Andrefana Beroroha > Bemavo > Ipingo | populated place | S 21° 43′ 0'' | E 45° 15′ 0'' |
| 489 | Ipiko | Madagascar, Androy Bekily District > Bevitiky > Beangily | populated place | S 24° 41′ 0'' | E 45° 22′ 0'' |
| 490 | Ipetsa Avaratra Ipetsa Avaratra,Ipetsa Nord | Madagascar, Atsimo-Andrefana Beroroha > Behisatsy > Ampandra | populated place | S 22° 2′ 0'' | E 44° 55′ 0'' |
| 491 | Ipetsa Atsimo Ampetsa,Ipetsa Atsimo,Ipetsa Sud | Madagascar, Atsimo-Andrefana Ankazoabo > Berenty > Ipetsa Ankoabe | populated place | S 22° 3′ 0'' | E 44° 57′ 0'' |
| 492 | Ipanda | Madagascar, Vakinankaratra Mandoto > Vasiana > Amparihy Bara | populated place | S 19° 49′ 0'' | E 46° 23′ 0'' |
| 493 | Ipaka Rivière | Madagascar, Upper Matsiatra | stream | S 21° 29′ 0'' | E 46° 41′ 0'' |
| 494 | Ipaka | Madagascar, Upper Matsiatra Ikalamavony > Solila > Ipaka | populated place | S 21° 26′ 0'' | E 46° 46′ 0'' |
| 495 | Lac Iotry | Madagascar, Atsimo-Andrefana | intermittent lake | S 23° 31′ 0'' | E 44° 20′ 0'' |
| 496 | Iotry | Madagascar, Androy Beloha District > Kopoky > Iotry | populated place | S 25° 6′ 0'' | E 45° 17′ 0'' |
| 497 | Iotry | Madagascar, Atsimo-Andrefana Betioky District > Tongobory > Ihotry | populated place | S 23° 31′ 0'' | E 44° 20′ 0'' |
| 498 | Iorenjalsy | Madagascar, Upper Matsiatra Lalangina > Alatsinainy Ialamarina > Anjamambe | populated place | S 21° 30′ 0'' | E 47° 23′ 0'' |
| 499 | Ioranjatsy Ioranjalsy,Ioranjatsy | Madagascar, Fitovinany Region Ikongo > Tolongoina > Andrambovato | populated place | S 21° 31′ 0'' | E 47° 26′ 0'' |
| 500 | Iony | Madagascar, Androy Tsihombe > Tsihombe > Sihanamena Marolava Est | populated place | S 25° 20′ 0'' | E 45° 29′ 0'' |
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