Baptist is a term describing individuals belonging to a Baptist church or a Baptist denomination. The name is derived from a conviction that followers of Jesus Christ are commanded to be baptized (most commonly by being immersed in water) as a public display of their faith, and thus most adherents reject infant baptism. While the term "Baptist" has its origins with the Anabaptists, and was sometimes viewed as pejorative, the denomination itself is historically linked to the English Dissenter or Separatist or Nonconformism movements of the 16th century.
Baptists are typically considered Protestants. Some Baptists reject that association. Most Baptist churches choose to associate with denominational groups that provide support without control. Examples of such denominations are the Southern Baptist Convention, National Baptist Convention USA, Conservative Baptist Association of America, American Baptist Churches USA, American Baptist Association (Landmark Baptists), Baptist Missionary Association of America, among others.
Both Roger Williams and his compatriot in working for religious freedom, Dr. John Clarke, are variously credited as founding the earliest Baptist church in America.