* Which field are you interested in? Actors, musicians, politicians, athletes, scientists, entrepreneurs, etc.?
* What kind of fame are you looking for? Current pop culture icons, historical figures, local heroes, etc.?
To help me give you a better answer, could you tell me:
* What kind of famous people are you interested in?
* What kind of fame are you looking for?
For example, you could say:
* "I'm interested in famous musicians in America."
* "I'm looking for famous historical figures who were influential in American politics."
Once you give me more details, I can give you a more tailored list of famous Americans.