The 37-year-old Spanish actress is expecting twins with the Thor star, HOLA! magazine reported. Pataky is in her third trimester and the babies are due in the spring, the magazine added.
Reps did not respond to an immediate request for comment.
Hemsworth's rep confirmed in November to E! News that the Fast & Furious 6 actress ispregnant for the second time. They are already parents to 1-year-old daughter India Rose, who will turn 2 before her siblings arrive.
Hemsworth and Pataky started dating in early 2010 and married that December.