| Type of Visa | Function |
| A | For foreign government officials |
| A-2, NATO 1-6 | Military personnel of a foreign country |
| B-1 | Athletes competing for prize money Business Visitors Nannies and domestic employees |
| B-2 | Visitors/Tourists, Visitors for medical treatment. |
| BCC | Mexican border crossing |
| C | Transit in US |
| D | crew members serving on aircrafts |
| E1&E2 | Treaty traders and investors |
| E3 | Australian professionals and special workers |
| F1 | Academic students |
| F2 | Dependents of F1 visa holders |
| G1-G5, NATO | Designated international employees and NATO |
| H1-B | Physicians and highly specialised occupations requiring specific industry knowledge |
| H2-A | Temporary workers for seasonal agriculture |
| H2-B | Temporary workers for non-agricultural professions |
| H3 | Primarily non-employment training programs |
| H1-C | Nurse travelling to areas that have shortage of health care professionals |
| I | Journalists and information media representatives |
| J | Exchange visitors, international cultural exchange visitors |
| J-1 | Au- pairs exchange visitors. Professors, teachers, scholars as exchange visitors |
| J-2 | Children of J-1 Visa under the age of 21 years |
| K-1 | Fiance |
| L | Intra company transferees |
| M-1 | For Vocational students |
| M-1 | Dependants of M-1 holder |
| O-1 | Foreign nationals possessing excellent abilities in the field of art and science |
| P | for artists, entertainers and athletes |
| Q | for international, cultural exchange visitors |
| R | reilgious workers |
| TN/TD | Mexican and Canadian NAFTA professional workers |
| T-1 | human trafficking victims |
| U-1 | Victims of crime, criminal activities |