The following is a complete episode list for the NBC science fiction serial drama series Heroes. Heroes follows the lives of people across the globe who possess various supernatural powers as they struggle to cope with their everyday lives and prevent foreseen disasters from occurring. The series premiered on American and Canadian television September 25, 2006^[1] and as of December 3, 2007, 34 episodes have aired. The first season, which finished twenty-first of 142 American primetime television programs in Nielsen Ratings,^[2] was released on DVD and HD DVD on August 28, 2007.^[3] The second season, which ranks twentieth of 119 in the ratings thus far,^[4] is currently on hiatus due to the Writers Guild of America strike.^[5]

Within the seasons of Heroes are "volumes."^[6] The first season comprises a single volume of twenty-three episodes called "Genesis," which is also the title of the pilot episode. The second season was designed to contain three volumes called "Generations," "Exodus" and "Villains," however "Exodus" was scrapped due to viewer criticism^[7] and the writers strike.^[8] Even if the strike ends in time for more episodes to be produced for the 2007–2008 television season,^[9] "Villains" will likely be carried over to the show's third season and the second season will consist of eleven episodes, which is thirteen less than was ordered by NBC.^[10]

Originally, the second season of Heroes was to be followed in April and May of 2008 by six stand-alone episodes of a new series, Heroes: Origins.^[11] The spin-off was intended as an alternative to a long mid-season hiatus, which led to a drop in ratings for Heroes in its first season.^[12] The project has been indefinitely postponed due to a decline in viewership and the writers strike.^[13]