Celebration IV, commonly abbreviated as C4 or CIV, was the fourth Celebration of the Star Wars saga. It was held at the Los Angeles Convention Center in Los Angeles, California from May 24 to May 28, 2007. Its primary purpose was to celebrate the 30th anniversary of Star Wars: Episode IV A New Hope, the original Star Wars film which debuted on May 25, 1977. May 24 was exclusively for members of the Hyperspace fan club.
Jay Laga'aia was the Celebrity Master of Ceremonies for the concourse stage, and Doug Steves was the MC for the behind-the-scenes stage.
The event brought in over 35,000 people—the largest attendance of any Star Wars Celebration so far.