SYDNEY (Reuters) - Australian actress Nicole Kidman said on Tuesday she was unsure of her future as an actor as there were others things she wanted to do, such as possibly having more children.

Kidman, 41, has three children -- four-month-old daughter Sunday Rose with her country singer husband Keith Urban, with whom she lives with in Nashville, and two children adopted during her first marriage to actor Tom Cruise.

The Oscar-winning actress, in Sydney for the world premiere of her latest movie, the outback epic "Australia," acknowledged some of her recent films had not been a great success, saying she had "quirky taste."

"In terms of my future as an actor and stuff, I don't know," she told a news conference.

"I am in a place in my life where ... I've had some great opportunities and I may just choose to have some more children. I've no idea what is in my future but I am very at peace with where I want to be.

"There are many things I want to do besides act."

Kidman, who won an Oscar for her role as writer Virginia Woolf in "The Hours" in 2002, has become one of Hollywood's biggest stars, often described as Australia's "leading lady."

But in recent years her movie credits have included "Birth," "The Interpreter," "Fur," "The Invasion" and "Margot at the Wedding," all of which failed to take off at the box-office.

"But that's my body of work. I am not going to apologize for it. I have kind of unusual taste and sometimes it's mainstream and a lot of times it's not," she said.

(Reporting by Belinda Goldsmith, Editing by Miral Fahmy)