Female Expendables.

Angelina Jolie ._.

Cynthia Rothrock

Oprah.

Carly Rae Jepsen and Nicki Minaj.

Rupaul.

Claudia Black

I guess Jenna Jameson should be here somewhere :P

Xena!

Kathleen Turner.

Anyone else think there isn't enough for them to make their own movie? I bet most of them I will go "Who is this?" or "Since when is she an action person?"

That tough chick who played a helicopter pilot in Avatar.

Sigourney Fucking Weaver.

Jessica Alba, just so I can perv on her.

Gina Carano

Charlize Theron , Jennifer Garner (elektra) , Hilary Swank (Ps I love you .. haha f.ck you no from one million hoe) , Maggie Q, olivia wilde , briana banks, Chasey Lain, Tera patrick (wait... wtf )

edit: no gina carano, she is so over-powered.

Jenette Goldstein :3

Justin Bieber!

Hope Solo.

Someone really rough around the edges, rather than your archetype female action hero. You know, someone with visible muscle rather than supermodel.

Ellen DeGeneres

scarlett johansson

It's kinda surprising me how difficult it really is to come up with a good list of names for this. Jolie and Jovovich are the only ones that immediately leap out at me.
A couple that haven't been mentioned yet:
Carrie-Anne Moss (The Matrix)
Gina Torres (Firefly/Serenity)
Summer Glau (Firefly/Serenity, Terminator: The Sarah Connor Chronicles)
and in response to Heinrich843: Dot Jones (Boondock Saints, Glee)

Betty White. She is tougher than she looks!

the entire cast of the expendables, IN DRAG.

Keira Knightley