The Clone Wars: Season Four

"These [Season Three] finale episodes are among the best we've produced, and it's only going to keep getting better. This is what audiences can expect to see in Season Four. There's still a big galaxy out there."

- Series Supervising Director Dave Filoni, on the series' Season Three finale

The fourth season of the animated Star Wars: The Clone Wars television series, marketed under the subtitle Battle Lines, began airing on September 16, 2011 with a one-hour season premiere on Cartoon Network. Like all previous seasons, Season Four will comprise twenty-two episodes. The season was first announced in April 2010.