Armstrong was given the rank of "Chevalier" — or Knight — in the "Legion d'Honneur" in 2005, the last year of his seven consecutive Tour de France victories. He was later stripped of those titles for doping.
A Legion of Honor official, who wasn't authorized to be quoted by name, said Wednesday she was unable to indicate when the decision was made to remove Armstrong's award. She said the organization doesn't traditionally announce it publicly when honorees lose their decoration.
The Legion of Honor was created under Napoleon Bonaparte in 1802, and roughly 1 million people have received it over the years. It is France's highest honour.