| Primary Purpose of Travel | Corresponding Visa Classification |
| Head of State or Government, Ambassador, public minister, career diplomatic or consular officer assigned to the United States, and members of immediate family | A-1 |
| Foreign government officials on official business or employees of diplomatic or consular missions in the United States, and members of immediate family | A-2 |
| Attendant, servant, or personal employee of A-1 and A-2 classes, and members of immediate family | A-3 |
| Domestic employee | B-1 |
| Temporary Visitor for Business or Pleasure | B-1/B-2 |
| Alien in transit through the United States | C-1 |
| Crew member (ship or aircraft)/transit | C-1/D |
| Foreign government officials, members of immediate family, attendant, servant, or personal employee in transit | C-3 |
| Treaty trader, spouse and children | E-1 |
| Treaty investor, spouse and children | E-2 |
| Student (academic or language training program) | F-1 |
| Spouse or child of F-1 | F-2 |
| Principal resident representative of recognized foreign member government to international organization, his/her staff, and members of immediate family on long-term assignment | G-1 |
| Other representative of recognized foreign member government to international organization, and members of immediate family on temporary assignment | G-2 |
| International organization officer or employee and members of immediate family | G-4 |
| Attendant, servant, or personal employee of G-1, G-2, or G-4 class and members of immediate family | G-5 |
| Temporary worker in a specialty occupation | H1-B |
| Temporary worker performing agricultural services unavailable in the United States | H2-A |
| Temporary worker performing non-agricultural services unavailable in the United States | H2-B |
| Industrial trainee | H-3 |
| Dependent of H1, H2 or H3 | H-4 |
| Representative of foreign information media and dependents | I |
| Exchange visitor | J-1 |
| Dependent of J-1 | J-2 |
| Fiancé(e) and certain spouses of a U.S. citizen, and their dependents | K |
| Intra-company transferee (executive, managerial, and specialized personnel continuing employment with an international firm or corporation) | L-1 |
| Dependent of L-1 | L-2 |
| Vocational student | M-1 |
| Dependent of M-1 | M-2 |
| Aliens with extraordinary ability in sciences, arts, education, business or athletics | O-1 |
| Aliens accompanying and assisting O-1 in a professional capacity | O-2 |
| Dependent of O-1 or O-2 | O-3 |
| Athletes and entertainers for a specific competition or performance | P-1 |
| Artists and entertainers performing under a program that is culturally unique | P-3 |
| Dependent of P-1 or P-3 | P-4 |
| Religious worker | R-1 |
| Dependent of R-1 | R-2 |
