Once Upon a Time... Life (French: Il était une fois... La vie) is an educational animated television series created and directed by Albert Barillé. It is the third series in the Once Upon a Time... franchise. It reprises the main characters from its predecessors, Once Upon a Time... Man and Once Upon a Time... Space, and adapts them into a physiology context, talking about the human body and its functions in a simplified and educational way. The series consists of 26 episodes.

The series was produced by French studio Procidis in co-production with FR3 and Canal+ (France), Société Radio-Canada (Canada), Televisión Española (TVE, Spain), Katholieke Radio Omroep (KRO, Netherlands), Radio Télévision Suisse Romande and Radiotelevisione della Svizzera Italiana (Switzerland), Radio-télévision belge de la Communauté française and Belgische Radio en Televisie Nederlandse Uitzendingen (RTBF and BRT, Belgium), and Eiken (Japan) who was the one who made the animation. The series premiered in France on Canal+, between 13 September 1987 and 13 March 1988, and it was subsequently broadcast on the channels of the rest of the broadcasters that participated in the production dubbed into their own language.

This is the second collaboration between Procidis and the Japanese studio Eiken subsequent to Once Upon a Time... Space and is thus, considered as an anime. However, unlike the previous series, this was never aired on television in Japan but instead was released on VHS in 1991.