Asked if he was ready to run for UCI president in 2013, LeMond, who won the Tour in 1986, 89 and 90, told the French daily Le Monde on Monday: "Yes I am ready. I was asked to and I said yes.
"With the Change Cycling Now movement, we want to change cycling. It is now or never."
LeMond is part of Change Cycling Now, a lobby group set up by former riders, journalists and a sponsor who look to radically change the way the sport is ruled in the wake of the Lance Armstrong scandal.
Questioned at a Change Cycling Now's news conference in London, LeMond told reporters: "I would do whatever I can to help change the sport.
"I would love to be part of the process to help change cycling."
Current UCI president Pat McQuaid has said he is seeking a third term