No, they call themselves Libertaire. Libertaire was adopted by french anarchists at the end of the 19th century when anarchist publications were banned from France. Sadly, as Americans do, the word was misused and transformed by Milton Friedman, on the behalf of oil companies, and later that failed actor named Ayn Rand, to described unabashed, unregulated, capitalism and corporatism.

No anarchist worth it’s salt would ever use the word libertarian instead of Libertaire.