How old was Thomas Lennon in Night at the Museum: Battle of the Smithsonian?

It's common to wonder how old a celebrity was when they starred in a particular film. That knowledge can reshape how we view their performance. We’re about to uncover that piece of the puzzle.

In the movie Night at the Museum: Battle of the Smithsonian, Thomas Lennon was at the age of:

38 years old

Based on our estimate, that was the actual age of the celebrity at the time.

Our method involved using the first calendar day of the release year of Night at the Museum: Battle of the Smithsonian:

January 1, 2009

And the birth day of Thomas Lennon, that is:

August 09, 1970

Since the release usually follows filming within a year, the age of Thomas Lennon during the actual shoot may have been a year more or less than indicated.