I have a few suggestions to add to the list - Clarisse La Rue, Annabeth Chase, Thalia Grace (Percy Jackson)

And also Sadie Kane from The Kane Chronicles.

And Six from the Lorien Legacies or better known as the (I am Number Four) series.

great information. Strong female characters are becoming more and more popular in both movies and literature

The only ones I've read/watched are To Kill A Mockingbird, Harry Potter and Salt, but I have heard of a few others. Maybe I'll read some of them.