The 34-year-old actress and her husband of five years Robert Zincone are expecting their first child, a rep has told E! News.
Akerman and Zincone met when she was lead singer for The Petalstones, in which Zincone played the drums.
The Watchmen star has yet to reveal a due date for the new child.
She will next be seen in CBGB, where she will play Blondie frontwoman Debbie Harry.
Akerman most recently starred in the movie adaptation of the hit Broadway play Rock of Ages.
Watch Malin Akerman discuss Rock of Ages below: