| J | ||
| Jabor, Marshall Islands (JAT) | Jiamusi, China (JMU) | Johnston Island, US Minor Outlying Islands (JON) |
| Jacareacanga, Brazil (JCR) | Jiayuguan, China (JGN) | Johor, Malaysia (JHB) |
| Jacobabad, Pakistan (JAG) | Jijel, Algeria (GJL) | Joinville, Brazil (JOI) |
| Jacquinot Bay, Papua New Guinea (JAQ) | Jijiga, Ethiopia (JIJ) | Jommu, India (IXJ) |
| Jaipur, India (JAI) | Jimma, Ethiopia (JIM) | Jomsom, Nepal (JMO) |
| Jakarta, Indonesia (CGK) | Jinan, China (TNA) | Jonkoping, Sweden (JKG) |
| Jalapa, Mexico (JAL) | Jingdezhen, China (JDZ) | Jorhat, India (JRH) |
| Jaluit Island, Marshall Islands (UIT) | Jinghong, China (JHG) | Jose De San Martin, Argentina (JSM) |
| Jambi. Indonesia (DJB) | Jinja, Uganda (JIN) | Jouf, Saudi Arabia (AJF) |
| Jamnagar, India (JGA) | Jinjiang, China (JJN) | Juazeiro Do Norte, Brazil (JDO) |
| Janakpur, Nepal (JKR) | Jinju, South Korea - Sancheon (HIN) | Juist, Germany (JUI) |
| Jaque, Panama (JQE) | Jinka, Ethiopia (BCO) | Juiz De Fora, Brazil (JDF) |
| Jayapura, Indonesia (DJJ) | Jinzhou, China (JNZ) | Jujuy, Argentina (JUJ) |
| Jeddah, Saudi Arabia (JED) | Ji-Parana, Brazil (JPR) | Julia Creek, Australia (JCK) |
| Jeh, Marshall Islands (JEJ) | Jiwani, Pakistan (JIW) | Juliaca, Peru (JUL) |
| Jeju, South Korea - Jeju Airport, metro area (CJU) | Joao Pessoa, Brazil (JPA) | Juzha, China (JUZ) |
| Jerez De La Frontere, Spain (XRY) | Jodhpur, India (JDH) | Jyvaskyla, Finland (JYV) |
| Jersey, United Kingdom (JER) | Joensuu, Finland (JOE) | |
| Jessore, Bangladesh (JSR) | Johannesburg, South Africa (JNB) |