Canon is defined as the bodies of work that are considered to be "genuine" or "official" within a certain fictional universe.
In the case of LOST, the only canon source of information is the television series itself. While the creators of LOST have never explicitly stated their views on the canonicity of the LOST novels, websites, etc., we at the LOST Wikia have chosen to accept information from all official sources of LOST story material. In the case of contradictory information, we utilize the following to determine which facts are "true."
- TV series - Information from episodes of LOST overrides contradictory facts from any other source.
- Alternative Mediums - Oceanic-Air.com, the ABC Diary, TheHansoFoundation.org, The Lost Experience, the Missing Pieces, and other websites started by the creative team are official sources of information, though it may be contradicted by the TV show at any time.
- Novels - The novels are considered a form of "official" fan fiction. They are created without the participation of the show's creators, but as long as it doesn't contradict anything shown on TV, information culled from these stories are fit for inclusion on the LOST Wikia. However, information about characters on the show is not acceptable, only information that pertains to characters introduced in the novels are acceptable.
Note: Information from DVD deleted scenes and omitted scenes from scripts are NOT considered canon.