The first season of The Office US has 6 episodes.
The season premiered on NBC on March 24, 2005, and ended on April 26, 2005. Its six-episode order was unusually short for an American network sitcom, partly because the U.S. adaptation was still establishing whether its mockumentary style and deliberately awkward humor would attract a broad audience.
Season 1 introduces the Scranton branch of the fictional paper company Dunder Mifflin. Steve Carell stars as regional manager Michael Scott, with Rainn Wilson, John Krasinski, Jenna Fischer, and B. J. Novak among the principal cast. The season adapts the premise and some material from the British series created by Ricky Gervais and Stephen Merchant, while beginning to develop its own characters and tone.
A common mix-up comes from later seasons, which are much longer. Most subsequent seasons contain roughly 22 episodes, with some hour-long or supersized installments. The six episodes are “Pilot,” “Diversity Day,” “Health Care,” “The Alliance,” “Basketball,” and “Hot Girl.” The complete first season was later released together on a single-disc DVD.