| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| ISA (MOUNT ISA) | airport | Australia | -20.66 | 139.49 | 1121 | 0 | |
| ISAACSON | airport | United States | 47.66 | -117.68 | 2410 | 0 | |
| ISABEL MUNI | airport | United States | 45.39 | -101.44 | 2398 | 0 | |
| ISAFJORDUR | airport | Iceland | 66.06 | -23.14 | 8 | 0 | |
| ISB (CHAKLALA) | airport | Pakistan | 33.62 | 73.10 | 1668 | 0 | |
| ISBELL | airport | United States | 36.19 | -76.28 | 12 | 0 | |
| ISBELL FLD | airport | United States | 34.47 | -85.72 | 877 | 0 | |
| ISBELL RANCH | airport | United States | 30.81 | -97.27 | 430 | 0 | |
| ISC (St. Mary's Airport) | airport | 49.91 | -6.29 | 116 | 0 | ||
| ISD (Santa Bárbara Airport) | airport | 2.45 | -77.98 | 10 | 0 | ||
| ISE (SULEYMAN DEMIREL) | airport | Turkey | 37.86 | 30.37 | 2835 | 0 | |
| ISEDOR IVERSON | airport | United States | 46.62 | -93.31 | 1228 | 0 | |
| ISFARA | airport | Tajikistan | 40.12 | 70.68 | 2814 | 0 | |
| ISG (ISHIGAKI) | airport | Japan | 24.34 | 124.19 | 93 | 0 | |
| ISHIGAKI | airport | Japan | 24.34 | 124.19 | 93 | 0 | |
| ISHURDI | airport | Bangladesh | 24.15 | 89.05 | 45 | 0 | |
| ISI (ISISFORD) | airport | Australia | -24.26 | 144.43 | 694 | 0 | |
| ISISFORD | airport | Australia | -24.26 | 144.43 | 694 | 0 | |
| ISJ (ISLA MUJERES) | airport | Mexico | 21.25 | -86.74 | 7 | 0 | |
| ISKANDAR | airport | Indonesia | -2.71 | 111.67 | 75 | 0 | |
| ISKENDERUN | airport | Turkey | 36.57 | 36.15 | 25 | 0 | |
| ISLA CEDROS | airport | Mexico | 28.04 | -115.19 | 98 | 0 | |
| ISLA MARTIN GARCIA | airport | Argentina | -34.18 | -58.25 | 7 | 0 | |
| ISLA MUJERES | airport | Mexico | 21.25 | -86.74 | 7 | 0 | |
| ISLA SAN FELIX | airport | Chile | -26.29 | -80.10 | 165 | 0 | |
| ISLA SOCORRO | airport | Mexico | 18.77 | -110.93 | 1085 | 0 | |
| ISLAND | airport | United States | 38.22 | -81.53 | 600 | 0 | |
| ISLAND AIR SERVICE | airport | United States | 41.77 | -70.87 | 53 | 0 | |
| ISLAND HEALTH CLINIC | airport | United States | 36.45 | -93.72 | 1547 | 0 | |
| ISLAND LAKE | airport | United States | 60.70 | -151.31 | 140 | 0 | |
| ISLAND LAKE | airport | United States | 61.63 | -149.62 | 370 | 0 | |
| ISLAND VIEW | airport | United States | 45.61 | -89.02 | 1640 | 0 | |
| ISLAY | airport | United Kingdom | 55.68 | -6.26 | 56 | 0 | |
| ISLE OF MAN | airport | Man, Isle of | 54.08 | -4.62 | 52 | 0 | |
| ISLE PRIVATE | airport | United States | 46.16 | -93.46 | 1271 | 0 | |
| ISLE-A-PORT | airport | United States | 35.10 | -90.11 | 215 | 0 | |
| ISLESBORO | airport | United States | 44.30 | -68.91 | 92 | 0 | |
| ISLEY FIELD | airport | United States | 42.52 | -92.52 | 982 | 0 | |
| ISM (Kissimmee Gateway Airport) | airport | 27.29 | -81.44 | 0 | |||
| ISN (SLOULIN FLD INTL) | airport | United States | 48.18 | -103.64 | 1982 | 0 | |
| ISO (KINSTON RGNL JETPORT AT STALLINGS FLD) | airport | United States | 35.33 | -77.61 | 93 | 0 | |
| ISP (LONG ISLAND MAC ARTHUR) | airport | United States | 40.80 | -73.10 | 99 | 0 | |
| ISPARTA | airport | Turkey | 37.79 | 30.58 | 3250 | 0 | |
| ISRAEL'S FARM | airport | United States | 48.51 | -122.09 | 65 | 0 | |
| ISS (WISCASSET) | airport | United States | 43.96 | -69.71 | 70 | 0 | |
| ISSSTE | city | San Luis Potosi | Mexico | 22.14 | -100.99 | 6223 | 146491 |
| ISSSTE | city | Guanajuato | Mexico | 21.29 | -100.51 | 6709 | 35561 |
| IST (ATATURK) | airport | Turkey | 40.98 | 28.81 | 163 | 0 | |
| ISTRANA | airport | Italy | 45.68 | 12.08 | 137 | 0 | |
| ISU (SULAYMANIYAH INTL) | airport | Iraq | 35.56 | 45.31 | 2494 | 0 | |
| ISW (ALEXANDER FLD SOUTH WOOD CO) | airport | United States | 44.36 | -89.84 | 1021 | 0 | |
| ISWAHYUDI | airport | Indonesia | -7.62 | 111.43 | 361 | 0 | |
| ISaratov | city | Saratovskaya Oblast' | Russia | 51.54 | 46.01 | 239 | 217104 |
| ISingapholo | city | Singapore | 1.29 | 103.86 | 3 | 940886 |