| Port Code | Port Name | Country |
| USJAX | Jacksonville | United States |
| USJAY | Jay | United States |
| USJBC | Jensen Beach | United States |
| USJBK | Berkeley | United States |
| USJBO | Jonesboro | United States |
| USJBR | Jonesboro | United States |
| USJBS | Pleasanton | United States |
| USJBY | St Johnsbury | United States |
| USJCC | Junction City | United States |
| USJCI | Johnson City | United States |
| USJCK | Jack | United States |
| USJCL | Clinton | United States |
| USJCN | Jefferson City | United States |
| USJCR | Jackson Center | United States |
| USJCT | Junction | United States |
| USJCX | Jacinto City | United States |
| USJCY | Johnson City | United States |
| USJDA | John Day | United States |
| USJDN | Jordan | United States |
| USJDY | Downey | United States |
| USJEA | Jeannette | United States |
| USJEC | Jersey City | United States |
| USJED | Jefferson Island | United States |
| USJEE | Jeffersonville | United States |
| USJEF | Jefferson City | United States |
| USJEI | Jeffersonville | United States |
| USJEM | Emeryville | United States |
| USJEN | Jennings | United States |
| USJEO | Jefferson | United States |
| USJEP | Jessup | United States |
| USJER | Jerome | United States |
| USJES | Jesup | United States |
| USJET | Jeffersontown | United States |
| USJEV | Jeffersonville | United States |
| USJFE | Jefferson | United States |
| USJFF | Jefferson | United States |
| USJFJ | Jefferson Junction | United States |
| USJFK | John F. Kennedy Apt/New York | United States |
| USJFL | Jefferson | United States |
| USJFN | Jefferson | United States |
| USJFO | Jeffersonville | United States |
| USJFS | Jefferson | United States |
| USJFV | Jeffersonville | United States |
| USJGC | Grove City | United States |
| USJGX | Glendale | United States |
| USJHB | Johnsonburg | United States |
| USJHC | Garden City | United States |
| USJHE | Johnston | United States |
| USJHM | Kapalua | United States |
| USJHN | Johnston | United States |
| USJHS | Johnston | United States |
| USJHV | Johnsonville | United States |
| USJHW | Jamestown | United States |
| USJHY | Cambridge | United States |
| USJID | City of Industry | United States |
| USJIS | Johns Island | United States |
| USJKB | Jacksonboro | United States |
| USJKG | Jackson | United States |
| USJKH | Jackson Heights | United States |
| USJKS | Jackson | United States |
| USJKT | Jenkintown | United States |
| USJKV | Jacksonville | United States |
| USJLA | Cooper Lodge | United States |
| USJLH | Arlington Heights | United States |
| USJLN | Joplin | United States |
| USJLX | Jonesville | United States |
| USJMB | Jamesburg | United States |
| USJMC | Sausalito | United States |
| USJMH | Schaumburg | United States |
| USJMS | Jamestown | United States |
| USJMT | Jamestown | United States |
| USJMV | Jamesville | United States |
| USJMW | Jamestown | United States |
| USJNA | Jena | United States |
| USJNJ | Orange | United States |
| USJNP | Newport Beach | United States |
| USJNT | Jonestown | United States |
| USJNU | Juneau | United States |
| USJNY | Johnson | United States |
| USJOA | Johnson | United States |
| USJOC | Johnson City | United States |
| USJOE | Jonesville | United States |
| USJOI | Jonesville | United States |
| USJOL | Jonesville | United States |
| USJON | Jonesport | United States |
| USJOO | Jonesboro | United States |
| USJOP | Joppa | United States |
| USJOQ | San Joaquin | United States |
| USJOR | Orange | United States |
| USJOS | Johnston | United States |
| USJOT | Joliet | United States |
| USJOW | Johnstown | United States |
| USJOY | Johnson City | United States |
| USJPG | Prince George | United States |
| USJPT | Jupiter | United States |
| USJQK | Jacksboro | United States |
| USJQS | Jacksonville | United States |
| USJRI | Jericho | United States |
| USJRM | Jerome | United States |
| USJSA | Judsonia | United States |