The final film in the series, "Mockingjay, Part 2", was released last month, and the possibility of getting the franchise to "live on and on and on" with prequels was floated by Lionsgate vice chairman Michael Burns, reported Entertainment Weekly.
Dormer, who plays Cressida in the films, talked of her admiration for "The Hunger Games" author and how she would only be interested if Collins was on board.
"I adore Suzanne Collins for her bravery and her imagination, and everything that is the success of The Hunger Games, the genesis, it all comes from Suzanne," Dormer said.
"So the minute I know that Suzanne is writing something, then yes, my ears would prick up. Almost definitely."
Star Jennifer Lawrence recently revealed that she would not be involved in any potential prequels.
"I think it's too soon. They've got to let the body get cold, in my opinion?," she said.