B-1 VISAS: Business visitors

B-2 VISAS: Visitors for pleasure

C-1 VISAS: Continuous transit; to/from United Nations

D-1 VISAS: Crewmen

E-1 VISAS: Treaty investors (see list of treaty countries)

E-2 VISAS: Treaty traders (see list of treaty countries)      

F-1 VISAS: Foreign students

G-1 VISAS: Representatives of international organizations

H-1A VISAS: Nurses

H-1B  VISAS: Specialty occupations; fashion models of distinguished merit;           certain Department of Defense employees

H-2A  VISAS: Temporary agricultural workers

H-2B  VISAS: Temporary non-agricultural workers

H-3  VISAS: Temporary trainees

I  VISAS: Foreign media representatives

J-1  VISAS: Exchange visitors: scholars, lecturers, researchers, au pairs, camp counselors, trainees

K-1, 3 VISAS: Fiancé(e)s of US citizens; spouses of US and LPR sponsors

L-1 VISAS: Intracompany transferees of multinational organizations

M-1  VISAS: Vocational students

N VISAS: Parents of certain special immigrants

O-1 VISAS: Extraordinary ability aliens in the sciences, arts, business, education or athletics

O-2  VISAS: Aliens in arts or athletics accompanying and integral to the O-1 

P-1  VISAS: Internationally known athletes, entertainment groups

P-2  VISAS: Performing artists in an reciprocal exchange program

P-3  VISAS: Culturally unique entertainers

Q  VISAS: Cultural exchange visitors

R VISAS: Religious workers

S  VISAS: Certain informants in criminal cases

TN  VISAS: NAFTA visas for professionals from Canada and Mexico

T VISAS: For certain victims of trafficking/slavery

U VISAS:  Certain victims of crimes needed to be witnesses

V VISAS: Beneficiaries under the Legal Immigration Family Equity Act

VISA WAIVER PILOT PROGRAM (WT/WT): certain short term visitors from countries with agreements not requiring visas. (See List of Visa Waiver Countries)