| Port Code | Port Name | Country |
| USREE | Reidsville | United States |
| USREG | Marengo | United States |
| USREH | Rehoboth Beach | United States |
| USREI | Reedsville | United States |
| USREL | Reedsville | United States |
| USREM | Bremen | United States |
| USREN | Red Bank | United States |
| USREO | Rome | United States |
| USREP | Freeport | United States |
| USREQ | Richfield | United States |
| USRER | Rensselaer | United States |
| USRES | Rescue | United States |
| USRET | Preston | United States |
| USREV | Reedville | United States |
| USREW | Red Hook | United States |
| USREX | Rex | United States |
| USREY | Reynolds | United States |
| USREZ | Revere | United States |
| USRFD | Rockford | United States |
| USRFF | Roff | United States |
| USRFG | Refugio | United States |
| USRFH | Rohnert Park | United States |
| USRFI | Rock Falls | United States |
| USRFK | Anguilla | United States |
| USRFL | River Falls | United States |
| USRFM | Rumford | United States |
| USRFN | Raeford | United States |
| USRFO | Rockford | United States |
| USRFP | Ridgefield Park | United States |
| USRFQ | Redfield | United States |
| USRFR | Richford | United States |
| USRFS | Rosemead | United States |
| USRFW | River Falls | United States |
| USRFY | Rolling Fork | United States |
| USRGC | Rio Grande City | United States |
| USRGD | Ringgold | United States |
| USRGE | Ridgeland | United States |
| USRGG | Rabun Gap | United States |
| USRGH | Brighton | United States |
| USRGI | Spring Hill | United States |
| USRGL | Riegelwood | United States |
| USRGM | Rockingham | United States |
| USRGN | Ringtown | United States |
| USRGO | Ridgewood | United States |
| USRGQ | Rogers | United States |
| USRGR | Ranger | United States |
| USRGT | Register | United States |
| USRGU | Rogue River | United States |
| USRGV | Rogersville | United States |
| USRHA | Crenshaw | United States |
| USRHC | Rock Hill | United States |
| USRHD | Riverhead | United States |
| USRHE | Rhine | United States |
| USRHH | Rochester Hills/Detroit | United States |
| USRHI | Rhinelander | United States |
| USRHJ | Rolling Hills | United States |
| USRHL | Richmondville | United States |
| USRHM | Richmond | United States |
| USRHN | Rahns | United States |
| USRHO | Rhode Island | United States |
| USRHR | Rochester | United States |
| USRHT | Brighton | United States |
| USRHV | Fair Haven | United States |
| USRHW | Rowland Heights | United States |
| USRHX | Red Hill | United States |
| USRIA | Marianna | United States |
| USRIC | Richmond | United States |
| USRID | Richmond | United States |
| USRIE | Rice Lake | United States |
| USRIF | Richfield | United States |
| USRIG | River Grove/Chicago | United States |
| USRIH | Ririe | United States |
| USRII | Richfield | United States |
| USRIK | Rincon | United States |
| USRIL | Rifle | United States |
| USRIM | Rimer | United States |
| USRIN | Richardson | United States |
| USRIO | Ringwood | United States |
| USRIP | Ripon | United States |
| USRIQ | Richland | United States |
| USRIR | Riddle | United States |
| USRIS | Ridgeville | United States |
| USRIT | Ridgeway | United States |
| USRIV | Reidsville | United States |
| USRIW | Riverton | United States |
| USRIX | Richmond Hill/Queens/New York | United States |
| USRIY | Brinkley | United States |
| USRJH | Richmond Highlands | United States |
| USRJJ | Richmond Beach | United States |
| USRJK | Richmond Hill | United States |
| USRJL | Richland | United States |
| USRJM | Rogers | United States |
| USRJN | Rotterdam Junction | United States |
| USRJO | Ringgold | United States |
| USRJV | Ridgeway | United States |
| USRJW | Ridgway | United States |
| USRKA | Rockmart | United States |
| USRKC | Yreka | United States |
| USRKD | Rockland | United States |
| USRKE | Rockledge | United States |