John P. Johnson/HBO
Now 30, she first gained fame for her breakout leading role in 2003's "Thirteen," which snagged her a Golden Globe nomination.
After that film's success, she continued to appear in smaller independent films. Toward the later 2000s, her roles made her more high-profile thanks to meaty stints in Oscar-nominated films including "The Wrestler" and "The Ides of March."
Now, she's one of the best actors on television, starring on HBO's "Westworld" as Dolores Abernathy, a dangerous host with free will, and a primary anti-hero in the second season, airing now on HBO.
Wood is also an activist for women's rights, an outspoken victim of sexual assault, and an advocate for LGBTQ+ rights.
Here's how Wood's career has blossomed over the past two decades: