According to The Hollywood Reporter, Luhrmann has selected David Wenham, next to be seen in the graphic novel adaptation "300," for the 20th Century Fox production.
Kidman will play a British aristocrat in Australia to sell a massive cattle property. She has to enlist an uncouth cattle-driver (Jackman, stepping in for Russell Crowe) to get the cows across the country. The couple ends up in the midst of the bombing of Darwin by Japanese forces.
The trade paper says that Wenham will play the film's antagonist, a station manager attempting to take control of the Brit's property.
The long-delayed film, written and directed by Luhrmann, will begin production in northern Australia in April.
Wenham appeared in Luhrmann's "Moulin Rouge!" and co-stared as Faramir in the final two parts of the Oscar-winning "Lord of the Rings" trilogy.