The Thor: The Dark World star, 30, and his wife, 37, are expecting their second child, his rep confirms to PEOPLE.
Hemsworth and the Fast and Furious 6 starare already parents to daughter India Rose, 18 months.
"She's the best!" Hemsworth told PEOPLE earlier this month of his baby girl.
"It makes it harder and harder to leave and go to work. I enjoy being at home a lot more than I ever have."