|
Rank | Population | City | Alternative city name(s) | Country |
| 326,502 | Iasi | | Romania |
83 | 2,536,837 | Ibadan | | Nigeria |
| 424,686 | Ibagué | | Colombia |
| 34,274 | Ibanda | | Uganda |
| 263,488 | Ibaraki | | Japan |
| 122,642 | Ibarra | | Ecuador |
| 225,611 | Ibb | | Yemen |
| 50,827 | Ibbenbüren | | Germany |
| 158,811 | Ibirité | | Brazil |
| 99,142 | 'Ibri | | Oman |
| 48,612 | Ibshaway | | Egypt |
517 | 640,766 | Içel | Mersin | Turkey |
| 276,049 | Ichaikaroji | Ichalkaranji | India |
| 200,653 | Icheon | Ich'on | South Korea |
| 55,766 | Ichhlampur | Islampur | India |
| 287,448 | Ichihara | | Japan |
784 | 453,819 | Ichikawa | | Japan |
| 278,636 | Ichinomiya | | Japan |
| 61,963 | Idah | | Nigeria |
| 168,154 | Idfu | | Egypt |
| 20,804 | Idjevan | Idževan | Armenia |
| 104,613 | Idku | | Egypt |
| 5,763 | Idrija | | Slovenia |
| 35,013 | Ieper | Ypres | Belgium |
| 17,948 | Ifanadiana | | Madagascar |
| 258,281 | Ife | | Nigeria |
| 72,496 | Ifo | | Nigeria |
| 86,829 | Ifon | | Nigeria |
| 43,589 | Iganga | | Uganda |
| 64,245 | Igbo Ora | | Nigeria |
| 64,887 | Igbo Ukwu | | Nigeria |
| 94,775 | Igboho | | Nigeria |
| 73,665 | Igdir | | Turkey |
| 22,967 | Igra | | Russia |
| 117,458 | Iguala de la Independecia | | Mexico |
| 33,417 | Igualada | | Spain |
| 71,820 | Ihiala | | Nigeria |
| 36,454 | Ihnasiyat al-Madinah | | Egypt |
| 18,205 | Ihosy | | Madagascar |
| 22,613 | Iisalmi | | Finland |
| 89,741 | Ijebu Igbo | | Nigeria |
| 171,831 | Ijebu Ode | | Nigeria |
| 131,818 | Ijero | | Nigeria |
| 36,209 | IJsselstein | | Netherlands |
| 15,593 | Ikalamavony | | Madagascar |
| 143,537 | Ikare | | Nigeria |
| 23,342 | Ikast | | Denmark |
| 81,016 | Ikerre | Pattoki | Nigeria |
| 154,031 | Ikire | | Nigeria |
| 105,832 | Ikirun | | Nigeria |
| 73,571 | Ikom | | Nigeria |
| 33,892 | Ikongo | | Madagascar |
| 255,265 | Ikorodu | | Nigeria |
| 165,043 | Ikot Ekpene | | Nigeria |
| 335,787 | Iksan | Iri | South Korea |
| 124,210 | Ila Orangun | | Nigeria |
| 168,472 | Ilam | | Iran |
| 17,796 | Ilam | | Nepal |
| 95,619 | Ilan | | Taiwan |
| 33,739 | Ilawa | | Poland |
| 143,821 | Ilawe Ekiti | | Nigeria |
| 192,747 | Ilesha | | Nigeria |
| 163,326 | Ilhéus | | Brazil |
| 2,953 | Ili'ili | | American Samoa |
| 4,483 | Ilinden | | Macedonia |
| 77,165 | Ilioúpolis | | Greece |
| 54,910 | Ilkal | | India |
| 37,766 | Ilkeston | | England |
| 22,864 | Illapel | | Chile |
| 17,041 | Illéla | | Niger |
| 53,951 | Illichivs'k | | Ukraine |
| 15,154 | Illnau-Effretikon | | Switzerland |
| 59,510 | Ilo | | Peru |
| 23,070 | Ilobasco | | El Salvador |
| 81,823 | Ilobu | | Nigeria |
| 395,809 | Iloilo | | Philippines |
| 143,720 | Ilopango | | El Salvador |
439 | 735,478 | Ilorin | | Nigeria |
| 22,681 | Il'skij | | Russia |
| 4,352 | Ilulissat | Jakobshavn | Greenland |
| 35,212 | Imamoglu | | Turkey |
| 29,744 | Imatra | | Finland |
| 32,336 | Imisli | | Azerbaijan |
| 64,957 | Imola | | Italy |
| 220,460 | Imperatriz | | Brazil |
| 37,556 | Imperial | | Peru |
| 20,859 | Impfondo | | Congo |
| 224,968 | Imphal | | India |
| 43,233 | in der Oberpfalz | Weiden | Germany |
| 42,134 | in der Pfalz | Landau | Germany |
| 25,161 | Inarwa | | Nepal |
69 | 2,716,702 | Incheon | Inch'on | South Korea |
| 49,067 | Inda Silase | | Ethiopia |
| 168,899 | Indaiatuba | | Brazil |
| 111,876 | Independence | | United States of America |
398 | 787,751 | Indianapolis | | United States of America |
| 26,866 | Inðija | | Serbia |
132 | 1,848,952 | Indore | | India |
| 69,622 | Indramayu | | Indonesia |
| 128,642 | Inegöl | | Turkey |
| 25,309 | Ingenio | | Spain |
| 5,947 | Ingenio | | Puerto Rico |
| 116,060 | Inglewood | | United States of America |
| 121,914 | Ingolstadt | | Germany |
| 51,253 | Inhambane | | Mozambique |
| 113,778 | Inisa | | Nigeria |
| 112,693 | Innsbruck | | Austria |
| 79,384 | Inowroclaw | | Poland |
| 26,868 | Inozemcevo | | Russia |
| 40,749 | Inta | | Russia |
| 5,066 | Interlaken | | Switzerland |
| 48,371 | Invercargill | | New Zealand |
| 29,167 | Inverkeithing | Rosyth | Scotland |
| 5,212 | Inverkeithing | Rosyth | Scotland |
| 44,540 | Inverness | | Scotland |
| 40,964 | Inverness | | Scotland |
| 20,379 | Inza | | Russia |
| 65,492 | Ioánnina | | Greece |
| 24,736 | Iolotan' | Yolöten | Turkmenistan |
| 226,581 | Ipatinga | | Brazil |
| 28,966 | Ipatovo | | Russia |
| 78,105 | Ipiales | | Colombia |
| 66,891 | Ipís | | Costa Rica |
479 | 690,118 | Ipoh | | Malaysia |
| 140,461 | Ipswich | | England |
| 140,436 | Ipswich | | United Kingdom |
| 125,882 | Ipswich | | Australia |
| 6,032 | Iqaluit | | Canada |
| 224,970 | Iquique | | Chile |
| 426,464 | Iquitos | | Peru |
| 1,680 | Iracoubo | | French Guiana |
| 47,648 | Iráklion | | Greece |
| 130,861 | Iranshahr | | Iran |
| 373,381 | Irapuato | | Mexico |
| 313,121 | Irbid | | Jordan |
| 42,735 | Irbit | | Russia |
| 106,107 | Iringa | | Tanzania |
565 | 599,718 | Irkutsk | | Russia |
| 57,630 | Irun | Irún | Spain |
| 184,811 | Iruña | Pamplona | Spain |
| 181,194 | Irvine | | United States of America |
| 37,201 | Irvine | | Scotland |
| 32,981 | Irvine | | Scotland |
| 198,262 | Irving | | United States of America |
| 12,999 | Isabela | | Puerto Rico |
| 4,198 | Ísafjarðarbær | Ísafjorður | Iceland |
| 964 | Isangel | | Vanuatu |
| 149,471 | Ise | | Nigeria |
| 100,042 | Iserlohn | | Germany |
| 37,818 | Isfara | | Tajikistan |
| 21,069 | Ishøj | | Denmark |
| 50,713 | Ishurdi | Iswardi | Bangladesh |
| 77,584 | Isieke | | Nigeria |
| 26,638 | Isil'kul' | | Russia |
| 68,326 | Išim | | Russia |
| 71,843 | Išimbaj | | Russia |
| 30,907 | Isiolo | | Kenya |
| 161,264 | Iskenderun | | Turkey |
| 63,388 | Iskitim | | Russia |
| 40,659 | Islahiye | | Turkey |
329 | 955,629 | Islamabad | | Pakistan |
| 73,056 | Isna | | Egypt |
| 164,409 | Isparta | | Turkey |
| 101,118 | Issia | | Côte d'Ivoire |
| 55,116 | Issy-les-Moulineaux | | France |
8 | 10,121,565 | Istanbul | Istanbul | Turkey |
| 34,101 | Istra | | Russia |
| 52,983 | Istravshan | Urateppa, Ura-T'ube | Tajikistan |
| 18,733 | Itá | | Paraguay |
| 197,141 | Itaboraí | | Brazil |
| 196,715 | Itabuna | | Brazil |
| 280,671 | Itagüí | | Colombia |
| 48,136 | Itahari | | Nepal |
| 155,195 | Itajaí | | Brazil |
| 194,789 | Itami | | Japan |
| 149,769 | Itapecerica da Serra | | Brazil |
| 122,928 | Itapetininga | | Brazil |
| 190,261 | Itapevi | | Brazil |
| 329,158 | Itaquaquecetuba | | Brazil |
| 101,004 | Itarsi | | India |
| 61,386 | Itauguá | | Paraguay |
| 43,004 | Itsa | | Egypt |
| 10,696 | Ittigen | | Switzerland |
| 537 | Ittoqqortoormiit | Scoresbysund | Greenland |
| 136,870 | Itu | | Brazil |
| 162,653 | Ituzaingó | | Argentina |
| 41,082 | Ityay al-Barud | | Egypt |
| 429,651 | Ivanovo | | Russia |
| 52,042 | Ivantejevka | | Russia |
| 49,268 | Ivry-sur-Seine | | France |
| 361,980 | Iwaki | | Japan |
| 173,672 | Iwo | | Nigeria |
| 334,688 | Ixtapaluca | | Mexico |
| 20,927 | Izalco | | El Salvador |
| 41,723 | Izberbaš | | Russia |
| 26,583 | Izegem | | Belgium |
| 129,105 | Izeh | | Iran |
514 | 642,348 | Iževsk | Ustinov | Russia |
| 36,039 | Izki | | Oman |
| 82,976 | Izmayil | | Ukraine |
84 | 2,515,818 | Izmir | | Turkey |
| 180,985 | Izmit | Kocaeli | Turkey |
| 39,994 | Izobil'nyj | | Russia |
| 10,636 | Izola | | Slovenia |
| 185,836 | Izumi | | Japan |
| 54,372 | Izyum | | Ukraine |
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