The Best Years of a Life (French: Les plus belles années d'une vie) is a 2019 French drama film directed by Claude Lelouch. 

It was screened out of competition at the 2019 Cannes Film Festival. It follows the lead characters featured in the earlier films A Man and a Woman (1966) and A Man and a Woman: 20 Years Later (1986). It was Trintignant's final film during his lifetime before his death in 2022.

Release date - 18 May 2019 (Cannes)

Cast

• Jean-Louis Trintignant as Jean-Louis Duroc
• Anouk Aimée as Anne Gauthier
• Souad Amidou as Françoise Gauthier, daughter of Anne
• Antoine Sire as Antoine Duroc, son of Jean-Louis
• Marianne Denicourt as La responsable
• Monica Bellucci as Elena, daughter of Jean-Louis Duroc