Americanism may refer to:

• Americanism, a word coined in American English.
• the belief that American values are the most ideal of cultural values. See American values and American exceptionalism.
• Americentrism, an attitude that gives special importance for the United States of America.
• Americanism (heresy), a supposed heresy said to have occured amongst many members of the Catholic Church in America around the turn of the century.