Once Upon a Time... The Americas (French: Il était une fois... les Amériques) is an educational animated television series created and directed by Albert Barillé. It is the fourth series in the Once Upon a Time... franchise. It explains the history of the Americas in a format adapted for children, with the action focused around one group of characters which appear in every episode dealing with the problems of the period depicted.

The series was produced by French studio Procidis in co-production with FR3 and Canal+ (France), Televisión Española (TVE, Spain), Westdeutscher Rundfunk and Südwestrundfunk (WDR and SWR, Germany), Reteitalia (Italy), Société Radio-Canada (Canada), Radio Télévision Suisse Romande and Radiotelevisione della Svizzera Italiana (Switzerland), Oy. Yleisradio Ab. (Yle, Finland), Radio-télévision belge de la Communauté française and Belgische Radio en Televisie Nederlandse Uitzendingen (RTBF and BRT, Belgium), and the French Centre national de la cinématographie. The series premiered in France on Canal+, beginning on 28 October 1991, and it was subsequently broadcast on the channels of the rest of the broadcasters that participated in the production dubbed into their own language.

The show aired in the United States on the History Channel in January–March 1995.