Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.

This is a non-diffusing parent category of Category:20th-century American women and Category:20th-century African-American people‎ and Category:20th-century American LGBT people‎ and Category:20th-century Native Americans‎ The contents of these subcategories can also be found within this category, or in diffusing subcategories of it.

Wikimedia Commons has media related to 20th-century people of the United States.

This page contains Americans who are notable for actions during the 20th century.