Wood, 25, wed British actor Jamie Bell, 26, last year. They met in 2005 on the set of Green Day's "Wake Me Up When September Ends" music video, in which they both appeared, and dated on and off before marrying.
"Evan Rachel Wood and husband Jamie Bell confirmed that they are expecting their first child later this year," Wood's representative told Us Weekly exclusively Friday. "The couple is thrilled."
The baby's gender and anticipated birth date were not reported.