The actress, who recently appeared in Heroes, starred in the show as a student who moonlights as a private investigator from 2004 until 2007.
"I'm really excited about the prospect of a Veronica Mars movie because we've been talking about it for so long," she told Fandango.
"If they write it, I'll do it. Absolutely."
Earlier this week, Mars creator Rob Thomas announced that a film is "close" to being completed and he hopes to pitch the idea to studios soon.