"Diversity Day" is the second episode of the first season of the American comedy television series The Office, and the show's second episode overall. Written by B. J. Novak and directed by Ken Kwapis, it first aired in the United States on March 29, 2005, on NBC. The episode guest stars Office consulting producer Larry Wilmore as Mr. Brown.

In this episode, Michael's (Steve Carell) controversial imitation of a Chris Rock routine forces the staff to undergo a racial diversity seminar. A consultant (Larry Wilmore) arrives to teach the staff about tolerance and diversity, but Michael insists on imparting his own knowledge—aggravating both the consultant and the entire office staff—and creates his own diversity seminar. He eventually assigns each staff member an index card with a different race on it, causing tempers to slowly simmer until they finally snap. Meanwhile, Jim struggles to keep hold of a lucrative contract extension, but Dwight makes the sale for himself.