Ben 10: Ultimate Alien/Episodes

The following is a list of episodes for Ben 10: Ultimate Alien. A total fifty-two episodes were made. Episodes 1 through 10 were intended be season 1 and episodes 11 through 20 were to be season 2 but it was merged into one season due to Cartoon Network's schedule.

Dwayne said in his blog that the seventh episode of the second season would introduce the second season story arc, but once again due to Cartoon Network airing issues the story arc was split into two seasons.