Happy birthday! Casey Affleck turns 51 today

By Lori Macatee
Washington
Last updated on August 12, 2026

The iconic and legendary actor turns 51 on Wednesday, Aug. 12, 2026.

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Casey Affleck is celebrating his 51st birthday today. As a number of online tributes attest, he is one of the most acclaimed actors of his generation.

Popular actor-director Casey Affleck (Manchester by the Sea, Good Will Hunting, ...) has always liked to keep a bit of himself hidden from view. At 51st birthday, he remains a man of many facets.

Affleck, a cultural icon

Born Caleb Casey McGuire Affleck-Boldt in Falmouth on August 12, 1975, his career spans an arc over many different eras and tastes in American history. Affleck's not just a great actor, he's an inspiration, an icon and a successful business man. At this point in his career, there seems to be little Casey hasn't done.

And we've got a feeling the next 12 months are going to be even bigger and better for Casey Affleck as he promises more to come. After all, he's only 51.

Happy Birthday, Casey, you're the best!