According to Spanish sources, the Valencian architect has been approached by casino operator MGM Mirage to design two copycat towers in the heart of the gambling mecca.
It is understood the new buildings would be at least 60m higher than the existing 190m-tall tower which overlooks Malmo harbour.
The original Turning Torso building is made up of nine cubes, twisting 90 degrees over its 45 storeys, and boasts a rooftop observation deck with views towards Copenhagen.
Calatrava could become the latest addition to a growing gang of international big hitters being assembled by MGM Mirage to work in the Nevada city.
Back in September Norman Foster, Cesar Pelli, Rafael Viñoly, James KM Cheng and Kohn Pedersen Fox were unveiled as the architects charged with delivering the casino giant's new 1.7 million m 2CityCenter development ( Five aces line up to work on massive Vegas casino complex).