Conan's father was an epidemiologist known for serving as the head of microbiology at Peter Bent Brigham Hospital and working as a professor at Harvard Medical School, per Biography.com.

The Oscars host is also a husband and father of two. Longtime comedian Conan O'Brien wears many hats and chief among them is that of a proud father of two children, whom he shares with his wife ...

Conan O'Brien has an incredible support network in his wife and two children. The 2025 Oscars host suffered a devastating end to 2024 when his father, Dr. Thomas O'Brien, died on December 9 at the ...