| Fort Worth Jhikli Ambwari | India Standard Time | -10:30 |
| Fort Worth Jessup | Eastern Time | -01:00 |
| Fort Worth Jesus Maria | Peru Time | 00:00 |
| Fort Worth Jette | Central European Time | -06:00 |
| Fort Worth Jettingen-Scheppach | Central European Time | -06:00 |
| Fort Worth Jindalee | Eastern Australia Time | -15:00 |
| Fort Worth Jindivick | Eastern Australia Time | -16:00 |
| Fort Worth Jim Thorpe | Eastern Time | -01:00 |
| Fort Worth Jinan | China Time | -13:00 |
| Fort Worth Ironton | Eastern Time | -01:00 |
| Fort Worth Iruma | Japan Time | -14:00 |
| Fort Worth Ireland | United Kingdom Time | -05:00 |
| Fort Worth Ipswich | Eastern Time | -01:00 |
| Fort Worth Iowa Park | Central Time | 00:00 |
| Fort Worth Iphofen | Central European Time | -06:00 |
| Fort Worth Inzell | Central European Time | -06:00 |
| Fort Worth Inverurie | United Kingdom Time | -05:00 |
| Fort Worth Inverleigh | Eastern Australia Time | -16:00 |
| Fort Worth Innaloo | Western Australia Time | -13:00 |
| Fort Worth Intra | Central European Time | -06:00 |
| Fort Worth Ingersoll | Eastern Time | -01:00 |
| Fort Worth Ingleburn | Eastern Australia Time | -16:00 |
| Fort Worth Inez | Eastern Time | -01:00 |
| Fort Worth Inishmore | Ireland Time | -05:00 |
| Fort Worth Indapur | India Standard Time | -10:30 |
| Fort Worth Indiana | Eastern Time | -01:00 |
| Fort Worth Indialantic | Eastern Time | -01:00 |
| Fort Worth Indian Harbour Beach | Eastern Time | -01:00 |
| Fort Worth Indian Rocks Beach | Eastern Time | -01:00 |
| Fort Worth Imboden | Central Time | 00:00 |
| Fort Worth Immenstadt | Central European Time | -06:00 |
| Fort Worth Incline Village | Pacific Time | 02:00 |
| Fort Worth Inala | Eastern Australia Time | -15:00 |
| Fort Worth Inari | Eastern European Time | -07:00 |
| Fort Worth Ischgl | Central European Time | -06:00 |
| Fort Worth Irvine | Pacific Time | 02:00 |
| Fort Worth Irvine | United Kingdom Time | -05:00 |
| Fort Worth Irving | Central Time | 00:00 |
| Fort Worth Ishikawa | Japan Time | -14:00 |
| Fort Worth Issigeac | Central European Time | -06:00 |
| Fort Worth Islington | Eastern Australia Time | -16:00 |
| Fort Worth Islamorada | Eastern Time | -01:00 |
| Fort Worth Islamabad | Pakistan Time | -10:00 |
| Fort Worth Islandia | Eastern Time | -01:00 |
| Fort Worth Isle | Central Time | 00:00 |
| Fort Worth Isla Canela | Central European Time | -06:00 |
| Fort Worth Isla Mujeres | Eastern Time | 00:00 |
| Fort Worth Itabashi | Japan Time | -14:00 |
| Fort Worth Itatiaia | Brasilia Time | -02:00 |
| Fort Worth Itaunja | India Standard Time | -10:30 |