[deputytess]

Marion from RAIDERS OF THE LOST ARK.

[petitfour]

Scarlett O’Hara

[snarkpup]

Yuki (from The Princess Blade) and Izuko (from Sky High), both played by Yumiko Shaku.

youtube.com/watch?v=-HztSLAZW1c

[Kartographer]

Eowyn

[MadMax, the Grinning Reaper]

Sharon Stone killing Gene Hackman.
“Jackie Brown” - Pam Grier and also in “Ghosts of Mars”.
Natasha Henstrich in “Ghosts of Mars”.
Jacqueline Bisset in anything.
Signourney Weaver - “Alien and Aliens”
Marjorie Mayne with a shotgun.
Cybil Shepard in “Moonlighting”. Hell, Cybil Shepard in anything.
Dale Rogers.
Marlena Dietrick in “Witness for the Prosecution”.
Grandma in “The Searchers”

[Paul R.]

Well... She was more a TV than movie character, but I would add Delenn from Babylon 5. She’s not the “warrior princess” type, but, I would not want to go up against her:

https://www.youtube.com/watch?v=UYloWBP79ro

“If you value your lives, be somewhere else.”

For my money, the compassionate / inner beauty side of her character is just as impressive. (I can’t find a You Tube link, but, for me, the “Don’t look away, captain” scene is simply as good as it gets”.)

[SirLurkedalot]

Blue Magic

[JLAGRAYFOX]

“Helena Bonham Carter”...”The Kings Speech”!!!